Bitwarden Server before 2026.7.2 does not verify that the caller is a member of the organization identified in a POST /collect request…
CVE-2026-71959
Bitwarden Server before 2026.7.2 does not verify that the caller is a member of the organization identified in a POST /collect request body, allowing any authenticated user to write forged, arbitrarily backdated entries into any organization's audit log.
Assessment
- CVSS
- 6.9 (v4.0)
- Severity
- Medium
- EPSS
- 0.48% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 10 August 2026
- Last updated
- 8 November 2026
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
At the source
References
- https://sanjokkarki.com.np/blog/bitwarden-audit-log-forgery
- https://github.com/bitwarden/server/releases/tag/v2026.7.2
- https://github.com/bitwarden/server/pull/7934
- https://github.com/bitwarden/server/commit/2aa92a3c8675a28e305e8207ff16592227f96291
- https://www.vulncheck.com/advisories/bitwarden-server-audit-log-injection-via-post-collect
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