{"id":"CVE-2026-119414","published":"2026-10-30T12:16:37.673","lastModified":"2026-10-30T19:14:38.697","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.","cvssScore":4.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","cwes":["CWE-863"],"vendors":[],"products":[],"references":[{"url":"https://abraxaslabs.tech/research/bitwarden-cipher-create-acl","tags":[]},{"url":"https://github.com/bitwarden/server","tags":[]},{"url":"https://github.com/bitwarden/server/blob/v2026.10.0/src/Api/Vault/Controllers/CiphersController.cs#L355","tags":[]},{"url":"https://github.com/bitwarden/server/blob/v2026.10.0/src/Infrastructure.EntityFramework/Vault/Repositories/CipherRepository.cs#L112","tags":[]},{"url":"https://github.com/bitwarden/server/commit/9030c42bf7d8f9ac2ff9fee85c39588d5eb81499","tags":[]},{"url":"https://github.com/bitwarden/server/pull/8482","tags":[]},{"url":"https://github.com/bitwarden/server/releases/tag/v2026.10.1","tags":[]},{"url":"https://www.vulncheck.com/advisories/bitwarden-server-before-2026.10.1-authorization-bypass-via-post-api-ciphers-create","tags":[]}],"exploitRefs":[{"url":"https://github.com/bitwarden/server","tags":[]},{"url":"https://github.com/bitwarden/server/blob/v2026.10.0/src/Api/Vault/Controllers/CiphersController.cs#L355","tags":[]},{"url":"https://github.com/bitwarden/server/blob/v2026.10.0/src/Infrastructure.EntityFramework/Vault/Repositories/CipherRepository.cs#L112","tags":[]},{"url":"https://github.com/bitwarden/server/commit/9030c42bf7d8f9ac2ff9fee85c39588d5eb81499","tags":[]},{"url":"https://github.com/bitwarden/server/pull/8482","tags":[]},{"url":"https://github.com/bitwarden/server/releases/tag/v2026.10.1","tags":[]}],"hasPoc":true,"ai":null}