MEDIUMVulnerability
CVE-2026-67335
better-auth versions before 1.6.2 fail to validate the OAuth state parameter against the stored nonce when using cookie-backed state storage without PKCE. Attackers can forge the state parameter and supply an attacker-controlled authorization code to create authenticated sessions bound to the attacker's external identity or persistently link attacker accounts to victim profiles.
Properties
- severity
- MEDIUM
- score
- 5.3
- epss_score
- 0.00172
- cve_id
- CVE-2026-67335
- vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
- published_at
- 2026-08-01T13:17:04.403
- last_modified
- 2026-09-08T20:34:34.997
- epss_percentile
- 0.06733
Related Entities (3)
ENRICHED_BY (1)
→[Source]FIRST EPSS
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Improper Authentication
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