158 lines
6.9 KiB
JSON
158 lines
6.9 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-2026-76169",
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"assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb",
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"state": "PUBLISHED",
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"assignerShortName": "openjs",
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"dateReserved": "2026-08-19T09:33:54.670Z",
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"datePublished": "2026-09-04T09:51:03.556Z",
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"dateUpdated": "2026-09-04T16:20:02.318Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "ce714d77-add3-4f53-aff5-83d477b104bb",
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"shortName": "openjs",
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"dateUpdated": "2026-09-04T09:51:03.556Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "fastify versions >= 4.0.0 and before 5.12.2 can route a malformed URL sent under one plugin prefix to the custom not-found handler of a different sibling plugin, and invoke it without the preHandler hook declared for that handler. The internal not-found router for encapsulated handlers dispatches malformed paths through a single shared handler pointer before URL decoding, ignoring the prefix and skipping the selected handler's normal lifecycle. An unauthenticated attacker can therefore reach an authentication-protected private fallback through an unrelated public prefix and read its full response, bypassing the authentication hook and breaking prefix encapsulation. Users should upgrade to fastify 5.12.2 or later.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "fastify versions >= 4.0.0 and before 5.12.2 can route a malformed URL sent under one plugin prefix to the custom not-found handler of a different sibling plugin, and invoke it without the preHandler hook declared for that handler. The internal not-found router for encapsulated handlers dispatches malformed paths through a single shared handler pointer before URL decoding, ignoring the prefix and skipping the selected handler's normal lifecycle. An unauthenticated attacker can therefore reach an authentication-protected private fallback through an unrelated public prefix and read its full response, bypassing the authentication hook and breaking prefix encapsulation. Users should upgrade to fastify 5.12.2 or later."
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "fastify",
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"product": "fastify",
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"defaultStatus": "unaffected",
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"versions": [
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{
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"versionType": "semver",
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"status": "affected",
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"version": "4.0.0",
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"lessThan": "5.12.2"
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},
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{
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"versionType": "semver",
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"status": "unaffected",
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"version": "5.12.2"
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}
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],
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"packageURL": "pkg:npm/fastify"
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}
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],
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"references": [
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{
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"url": "https://github.com/fastify/fastify/security/advisories/GHSA-p68q-wchp-6fh7"
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},
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{
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"url": "https://cna.openjsf.org/security-advisories.html"
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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": "vvvvvvvvvvitel"
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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": "mcollina"
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},
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{
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"lang": "en",
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"type": "remediation reviewer",
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"value": "UlisesGascon"
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},
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{
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"lang": "en",
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"type": "finder",
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"value": "schecthellraiser606"
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},
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{
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"lang": "en",
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"type": "finder",
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"value": "B1gN0Se"
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}
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],
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"title": "fastify vulnerable to authentication bypass via malformed URLs reaching encapsulated not-found handlers",
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"metrics": [
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{
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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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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-288",
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"lang": "en",
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"description": "CWE-288: Authentication Bypass Using an Alternate Path or Channel",
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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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"x_generator": {
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"engine": "cve-kit 1.0.0"
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}
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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": "2026-09-04T16:18:32.577097Z",
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"id": "CVE-2026-76169",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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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": "2026-09-04T16:20:02.318Z"
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}
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}
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]
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}
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} |