What’s Vulnerable › Vulnerabilities

CVE-2026-71959: Bitwarden Server < 2026.7.2 Audit Log Injection via POST /collect

• Severity: medium (CVSS 5.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-10 · updated 2026-10-24
• Weakness: CWE-862

Description

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.

Affected products

• bitwarden server: before 2026.7.2 — fixed in 2026.7.2

How to fix

Upgrade to a fixed version: bitwarden server 2026.7.2. Check the vendor advisory for mitigations.

References

• https://github.com/bitwarden/server/commit/2aa92a3c8675a28e305e8207ff16592227f96291
• https://github.com/bitwarden/server/pull/7934
• https://github.com/bitwarden/server/releases/tag/v2026.7.2
• https://sanjokkarki.com.np/blog/bitwarden-audit-log-forgery
• https://www.vulncheck.com/advisories/bitwarden-server-audit-log-injection-via-post-collect

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