CVE-2026-27898

Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwardenrs. Prior to version 1.35.4, an authenticated regular user can specify another user’s cipherid and call "PUT /api/ciphers/id/partial" Even though the standard retrieval API correctly denies access...

CVE-2026-27898 Vaultwarden: Unauthorized Access via Partial Update API on Another User’s Cipher

Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwardenrs. Prior to version 1.35.4, an authenticated regular user can specify another user’s cipherid and call "PUT /api/ciphers/id/partial" Even though the standard retrieval API correctly denies access...

CVE-2026-26012

CVE-2026-26012 affects vaultwarden (unofficial Bitwarden server in Rust). Prior to 1.35.3, a regular organization member could retrieve all ciphers within an organization via the /ciphers/organization-details endpoint, which internally uses Cipher::find_by_org and returns ciphers with CipherSyncT...