Description
Bitwarden Server prior to v2026.4.1 contains a missing authorization vulnerability that allows any authenticated user to write ciphers into an arbitrary organization via `POST /ciphers/import-organization` by submitting an empty `collections` array, which causes the server-side permission check to be skipped.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
bitwarden server
Default version status: affected
0 to < 2026.4.1affected
pkg:github/bitwarden/serverReferences
- https://sanjokkarki.com.np/blog/bitwarden-import-org-bypass ↗
- https://github.com/bitwarden/server/releases/tag/v2026.4.1 ↗
- https://github.com/bitwarden/server/pull/7394 ↗
- https://github.com/bitwarden/server/commit/ebbf6dd0fa752114c09d73abb48ce32a50476758 ↗
- https://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-organization-cipher-import ↗