CVE-2026-43638
Last modified
CVE-2026-43638 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bitwarden | Server | < 2026.4.1 |
References
- https://github.com/bitwarden/server/pull/7394Issue Tracking, Patch
- https://sanjokkarki.com.np/blog/bitwarden-import-org-bypassExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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