Bitwarden Server before 2026.6.0 does not verify that the email in a POST /auth-requests/admin-request body belongs to the authenticated caller, allowing a low-privileged organization member to obtain another user's vault key and a victim-scoped access token by creating a Trusted Device Encryption authentication request, bound to an attacker-controlled public key, that is readable from an unauthenticated endpoint once approved resulting in disclosure of the victim's vault key and account takeover.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/bitwarden/server/commit/dcf4c486b2b5bedecc03a48b427243328cc74a9a Patch
- https://github.com/bitwarden/server/pull/7615 Issue Tracking, Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.3 · bitwardenNVD modified 2026-10-25 17:10
Affected (CPE criteria) 1
cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*
References 5
- https://github.com/bitwarden/server/commit/dcf4c486b2b5bedecc03a48b427243328cc74a9a Patch
- https://github.com/bitwarden/server/pull/7615 Issue Tracking, Patch
- https://github.com/bitwarden/server/releases#release-v2026.6.0 Release Notes
- https://sanjokkarki.com.np/blog/bitwarden-vault-key-heist Exploit, Third Party Advisory
- https://www.vulncheck.com/advisories/bitwarden-server-authorization-bypass-via-admin-auth-request Third Party Advisory