Critical severity9.6NVD Advisory· Published Jul 15, 2026· Updated Jul 21, 2026
CVE-2026-53513
CVE-2026-53513
Description
Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the @better-auth/sso plugin's POST /sso/register and POST /sso/update-provider endpoints accept attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs when skipDiscovery: true is set, store them on the ssoProvider row without origin validation, and fetch them during OIDC callback, allowing non-blind server-side request forgery and possible account linking when trustEmailVerified: true is configured. This issue is fixed in version 1.6.11.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@better-auth/ssonpm | >= 0.1.0, < 1.6.11 | 1.6.11 |
Affected products
4cpe:2.3:a:better-auth:better-auth\/sso:*:*:*:*:*:node.js:*:*+ 1 more
- cpe:2.3:a:better-auth:better-auth\/sso:*:*:*:*:*:node.js:*:*range: <1.6.11
- (no CPE)range: <1.6.11
cpe:2.3:a:better-auth:better_auth:*:*:*:*:*:node.js:*:*+ 1 more
- cpe:2.3:a:better-auth:better_auth:*:*:*:*:*:node.js:*:*range: >=0.1.0,<1.6.11
- (no CPE)range: <1.6.11
Patches
Vulnerability mechanics
References
6- github.com/better-auth/better-auth/commit/37f60cb176cb53147da7dfd5ec15afa5b486e81envdPatchWEB
- github.com/better-auth/better-auth/pull/9574nvdIssue TrackingPatchWEB
- github.com/advisories/GHSA-5rr4-8452-hf4vghsaADVISORY
- github.com/better-auth/better-auth/security/advisories/GHSA-5rr4-8452-hf4vnvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-53513ghsaADVISORY
- github.com/better-auth/better-auth/releases/tag/v1.6.11nvdRelease NotesWEB
News mentions
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