150 lines
6.5 KiB
JSON
150 lines
6.5 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-2026-45364",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-05-12T00:51:29.085Z",
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"datePublished": "2026-05-28T21:34:51.446Z",
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"dateUpdated": "2026-05-29T19:05:38.845Z"
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},
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"containers": {
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"cna": {
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"title": "Better Auth: Rate limiter keys IPv6 addresses individually and is bypassable via prefix rotation",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-307",
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"lang": "en",
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"description": "CWE-307: Improper Restriction of Excessive Authentication Attempts",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 7.3,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-p6v2-xcpg-h6xw",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-p6v2-xcpg-h6xw"
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},
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{
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"name": "https://github.com/better-auth/better-auth/pull/7470",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/better-auth/better-auth/pull/7470"
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},
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{
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"name": "https://github.com/better-auth/better-auth/pull/7509",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/better-auth/better-auth/pull/7509"
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},
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{
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"name": "https://github.com/better-auth/better-auth/commit/43e719bcc0c223c7079fa0c611a9cf7ea1188254",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/better-auth/better-auth/commit/43e719bcc0c223c7079fa0c611a9cf7ea1188254"
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},
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{
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"name": "https://github.com/better-auth/better-auth/commit/57af0f7b910dcf7b1a5c0615d10b9bd56bb69bef",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/better-auth/better-auth/commit/57af0f7b910dcf7b1a5c0615d10b9bd56bb69bef"
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}
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],
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"affected": [
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{
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"vendor": "better-auth",
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"product": "better-auth",
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"versions": [
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{
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"version": "< 1.4.17",
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"status": "affected"
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},
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{
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"version": ">= 1.5.0-beta.1, < 1.5.0-beta.9",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-05-28T21:34:51.446Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Better Auth is an authentication and authorization library for TypeScript. Prior to 1.4.17 and 1.5.0-beta.9, Better Auth's HTTP rate limiter keyed each request by the exact textual IP address it received in x-forwarded-for (or the configured IP-bearing header). IPv6 clients controlling a typical /64 allocation could rotate through 2^64 distinct source addresses without exhausting the per-address counter, defeating rate limiting on /sign-in/email, /sign-up/email, /forget-password, and every other path the limiter protects. The same bug allowed a single client to vary the textual encoding of one IPv6 address (uppercase, compression, IPv4-mapped, hex-encoded IPv4-in-IPv6) and produce multiple distinct keys. This vulnerability is fixed in 1.4.17 and 1.5.0-beta.9."
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}
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],
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"source": {
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"advisory": "GHSA-p6v2-xcpg-h6xw",
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"discovery": "UNKNOWN"
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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": "2026-05-29T19:05:14.121201Z",
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"id": "CVE-2026-45364",
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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": "2026-05-29T19:05:38.845Z"
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}
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}
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]
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}
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} |