[ CVE-2026-119414 · Published 30 Oct 2026 ]
Vulnerability in bitwarden server
CVSS 4.3
EPSS <1%1 agency advisoryNo fix listed yet
[ Description ]Official description
Bitwarden Server before 2026.10.1 on Entity Framework backends contains an authorization bypass vulnerability that allows organization members to add ciphers to collections they cannot edit. Attackers can call POST /api/ciphers/create, where a nulled UserId is treated as administrative, to inject vault items synced to read-only or inaccessible collections' members.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ Advisories ]Government CERT advisories
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BSI CERT-BundWID-SEC-2026-4261
Bitwarden: Vulnerability allows bypassing security measures Translated from German
[ References ]References
- abraxaslabs.tech/research/bitwarden-cipher-create-acl
- github.com/bitwarden/server
- github.com/bitwarden/server/blob/v2026.10.0/src/Api/Vault/Controllers/CiphersController.cs
- github.com/bitwarden/server/blob/v2026.10.0/src/Infrastructure.EntityFramework/Vault/Re…
- github.com/bitwarden/server/commit/9030c42bf7d8f9ac2ff9fee85c39588d5eb81499
- github.com/bitwarden/server/pull/8482
- github.com/bitwarden/server/releases/tag/v2026.10.1
- www.vulncheck.com/advisories/bitwarden-server-before-2026.10.1-authorization-bypass-via…