CVE-2026-119414: Bitwarden Server before 2026.10.1 Authorization Bypass via POST /api/ciphers/create
Medium · CVSS 4.3 (CVSS 3.1)EPSS 0.36%, 30th percentilePublished Updated Assigner: VulnCheck
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.
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N · CWE-863
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
bitwarden: server
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- abraxaslabs.tech/research/bitwarden-cipher-create-acl (opens in new tab)
- github.com/bitwarden/server (opens in new tab)
- github.com/bitwarden/server/blob/v2026.10.0/src/Api/Vault/Controllers/CiphersCon… (opens in new tab)
- github.com/bitwarden/server/blob/v2026.10.0/src/Infrastructure.EntityFramework/V… (opens in new tab)
- github.com/bitwarden/server/commit/9030c42bf7d8f9ac2ff9fee85c39588d5eb81499 (opens in new tab)
- github.com/bitwarden/server/pull/8482 (opens in new tab)
- github.com/bitwarden/server/releases/tag/v2026.10.1 (opens in new tab)
- www.vulncheck.com/advisories/bitwarden-server-before-2026.10.1-authorization-bypass-via… (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)