316 lines
16 KiB
JSON
316 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-65631",
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"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"state": "PUBLISHED",
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"assignerShortName": "EEF",
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"dateReserved": "2026-07-22T13:58:26.233Z",
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"datePublished": "2026-10-26T19:53:45.204Z",
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"dateUpdated": "2026-11-03T17:31:26.989Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"collectionURL": "https://repo.hex.pm",
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"cpes": [
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"cpe:2.3:a:potatosalad:jose:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"jose_jwk_kty_rsa",
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"jose_jwk",
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"'Elixir.JOSE.JWK'"
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],
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"packageName": "jose",
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"packageURL": "pkg:hex/jose",
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"product": "jose",
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"programFiles": [
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"src/jwk/jose_jwk_kty_rsa.erl",
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"src/jwk/jose_jwk.erl",
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"lib/jose/jwk.ex"
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],
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"programRoutines": [
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{
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"name": "jose_jwk_kty_rsa:from_map/1"
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},
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{
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"name": "jose_jwk_kty_rsa:convert_sfm_to_crt/1"
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},
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{
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"name": "jose_jwk_kty_rsa:convert_sfm_to_crt_find_p/6"
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},
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{
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"name": "jose_jwk:from_binary/1"
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},
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{
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"name": "jose_jwk:from_map/1"
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},
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{
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"name": "'Elixir.JOSE.JWK':from_binary/1"
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},
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{
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"name": "'Elixir.JOSE.JWK':from_map/1"
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}
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],
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"repo": "https://github.com/potatosalad/erlang-jose",
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"vendor": "potatosalad",
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"versions": [
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{
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"lessThan": "1.11.13",
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"status": "affected",
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"version": "1.7.7",
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"versionType": "semver"
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}
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]
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},
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{
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"collectionURL": "https://github.com",
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"cpes": [
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"cpe:2.3:a:potatosalad:jose:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"jose_jwk_kty_rsa",
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"jose_jwk",
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"'Elixir.JOSE.JWK'"
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],
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"packageName": "potatosalad/erlang-jose",
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"packageURL": "pkg:github/potatosalad/erlang-jose",
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"product": "jose",
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"programFiles": [
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"src/jwk/jose_jwk_kty_rsa.erl",
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"src/jwk/jose_jwk.erl",
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"lib/jose/jwk.ex"
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],
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"programRoutines": [
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{
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"name": "jose_jwk_kty_rsa:from_map/1"
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},
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{
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"name": "jose_jwk_kty_rsa:convert_sfm_to_crt/1"
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},
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{
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"name": "jose_jwk_kty_rsa:convert_sfm_to_crt_find_p/6"
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},
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{
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"name": "jose_jwk:from_binary/1"
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},
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{
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"name": "jose_jwk:from_map/1"
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},
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{
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"name": "'Elixir.JOSE.JWK':from_binary/1"
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},
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{
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"name": "'Elixir.JOSE.JWK':from_map/1"
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}
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],
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"repo": "https://github.com/potatosalad/erlang-jose",
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"vendor": "potatosalad",
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"versions": [
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{
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"lessThan": "bfd336c0062bff93e65d08c22361897e96afd956",
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"status": "affected",
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"version": "d19e1ba68d88c68d29aa942be2573a22dbafca1f",
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"versionType": "git"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"cpeMatch": [
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{
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"criteria": "cpe:2.3:a:potatosalad:jose:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "1.11.13",
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"versionStartIncluding": "1.7.7",
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"vulnerable": true
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}
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],
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"negate": false,
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"operator": "OR"
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}
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],
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"operator": "AND"
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "reporter",
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"value": "Peter Ullrich"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "Andrew Bennett"
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},
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{
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"lang": "en",
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"type": "analyst",
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"value": "Jonatan Männchen / EEF"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Inefficient Algorithmic Complexity in erlang-jose allows an unauthenticated remote attacker to cause a CPU-exhaustion denial of service by submitting a crafted RSA JSON Web Key.</p>\n<p>When an application parses an untrusted JWK through the public <code>jose_jwk:from_binary/1</code> or <code>jose_jwk:from_map/1</code> API (or the Elixir wrappers <code>JOSE.JWK.from_binary/1</code> and <code>JOSE.JWK.from_map/1</code>), an RSA private key that supplies <code>d</code>, <code>e</code>, and <code>n</code> but omits all Chinese Remainder Theorem parameters (<code>p</code>, <code>q</code>, <code>dp</code>, <code>dq</code>, <code>qi</code>) is routed into <code>convert_sfm_to_crt/1</code>, which tries to recover the missing primes by factoring the modulus. The three integers are read straight from the base64url input and are never validated as a real RSA key. When the modulus cannot be split into two factors (for example, when it is itself prime), the search loop <code>convert_sfm_to_crt_find_p/6</code> performs a modular exponentiation over the attacker-sized modulus on every iteration and never succeeds. A single request of a few hundred bytes forces close to one CPU-second of work before an internal one-second watchdog kills the worker, and a larger modulus raises the cost further. By flooding such requests an attacker can saturate every scheduler and deny service, without credentials, a valid RSA key, or any special configuration.</p>\n<p>This issue affects jose: from 1.7.7 before 1.11.13.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Inefficient Algorithmic Complexity in erlang-jose allows an unauthenticated remote attacker to cause a CPU-exhaustion denial of service by submitting a crafted RSA JSON Web Key.\n\nWhen an application parses an untrusted JWK through the public `jose_jwk:from_binary/1` or `jose_jwk:from_map/1` API (or the Elixir wrappers `JOSE.JWK.from_binary/1` and `JOSE.JWK.from_map/1`), an RSA private key that supplies `d`, `e`, and `n` but omits all Chinese Remainder Theorem parameters (`p`, `q`, `dp`, `dq`, `qi`) is routed into `convert_sfm_to_crt/1`, which tries to recover the missing primes by factoring the modulus. The three integers are read straight from the base64url input and are never validated as a real RSA key. When the modulus cannot be split into two factors (for example, when it is itself prime), the search loop `convert_sfm_to_crt_find_p/6` performs a modular exponentiation over the attacker-sized modulus on every iteration and never succeeds. A single request of a few hundred bytes forces close to one CPU-second of work before an internal one-second watchdog kills the worker, and a larger modulus raises the cost further. By flooding such requests an attacker can saturate every scheduler and deny service, without credentials, a valid RSA key, or any special configuration.\n\nThis issue affects jose: from 1.7.7 before 1.11.13."
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}
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],
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"value": "Inefficient Algorithmic Complexity in erlang-jose allows an unauthenticated remote attacker to cause a CPU-exhaustion denial of service by submitting a crafted RSA JSON Web Key.\n\nWhen an application parses an untrusted JWK through the public jose_jwk:from_binary/1 or jose_jwk:from_map/1 API (or the Elixir wrappers JOSE.JWK.from_binary/1 and JOSE.JWK.from_map/1), an RSA private key that supplies d, e, and n but omits all Chinese Remainder Theorem parameters (p, q, dp, dq, qi) is routed into convert_sfm_to_crt/1, which tries to recover the missing primes by factoring the modulus. The three integers are read straight from the base64url input and are never validated as a real RSA key. When the modulus cannot be split into two factors (for example, when it is itself prime), the search loop convert_sfm_to_crt_find_p/6 performs a modular exponentiation over the attacker-sized modulus on every iteration and never succeeds. A single request of a few hundred bytes forces close to one CPU-second of work before an internal one-second watchdog kills the worker, and a larger modulus raises the cost further. By flooding such requests an attacker can saturate every scheduler and deny service, without credentials, a valid RSA key, or any special configuration.\n\nThis issue affects jose: from 1.7.7 before 1.11.13."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-130",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-130 Excessive Allocation"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"attackVector": "LOCAL",
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"baseScore": 6.9,
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"baseSeverity": "MEDIUM",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "HIGH",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-407",
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"description": "CWE-407 Inefficient Algorithmic Complexity",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"shortName": "EEF",
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"dateUpdated": "2026-10-26T19:53:45.204Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory",
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"related"
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],
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"url": "https://github.com/potatosalad/erlang-jose/security/advisories/GHSA-3m45-vrpj-xmrq"
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},
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{
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"name": "EEF CNA record for CVE-2026-65631",
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"tags": [
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"related"
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],
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"url": "https://cna.erlef.org/cves/CVE-2026-65631.html"
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},
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{
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"name": "OSV record EEF-CVE-2026-65631",
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"tags": [
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"related"
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],
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"url": "https://osv.dev/vulnerability/EEF-CVE-2026-65631"
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},
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{
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"name": "Introducing commit d19e1ba in potatosalad/erlang-jose",
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"tags": [
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"related"
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],
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"url": "https://github.com/potatosalad/erlang-jose/commit/d19e1ba68d88c68d29aa942be2573a22dbafca1f"
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},
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{
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"name": "Fix commit bfd336c in potatosalad/erlang-jose",
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"tags": [
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"patch"
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],
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"url": "https://github.com/potatosalad/erlang-jose/commit/bfd336c0062bff93e65d08c22361897e96afd956"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"title": "erlang-jose RSA JWK parsing attempts to factor an attacker-controlled modulus, enabling CPU-exhaustion denial of service"
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-11-03T17:27:23.107167Z",
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"id": "CVE-2026-65631",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-11-03T17:31:26.989Z"
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}
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}
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]
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}
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} |