Vulnerability Description
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO authorization flow did not bind the OAuth state parameter accepted by /connect/authorize to the initiating browser session, allowed attacker-controlled PKCE parameters, and left SsoAuth records intact after failed token exchange, allowing an unauthenticated attacker to induce IdP authentication and redeem tokens for a fully authenticated session. This issue is fixed in version 1.36.0.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/dani-garcia/vaultwarden/commit/d297e274a35dccd0f5d935e9d5934e
- https://github.com/dani-garcia/vaultwarden/pull/7163
- https://github.com/dani-garcia/vaultwarden/releases/tag/1.36.0
- https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-pfp2-jhgq-6h
FAQ
What is CVE-2026-47158?
CVE-2026-47158 is a vulnerability with a CVSS score of 8.3 (HIGH). Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO authorization flow did not bind the OAuth state parameter accepted by /connect/authorize to the initiat...
How severe is CVE-2026-47158?
CVE-2026-47158 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-47158?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.