medium5.4
CVE-2026-43638
Bitwarden Server prior to v2026.4.1 contains a missing authorization vulnerability that allows any authenticated user to write ciphers into an arbitrary organi…
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Bitwarden | Server | before 2026.4.1 |
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/bitwarden/server/commit/ebbf6dd0fa752114c09d73abb48ce32a50476758
- https://github.com/bitwarden/server/pull/7394
- https://github.com/bitwarden/server/releases/tag/v2026.4.1
- https://sanjokkarki.com.np/blog/bitwarden-import-org-bypass
- https://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-organization-cipher-import