CVE-2026-43640

EUVD-2026-29171
Bitwarden Server prior to v2026.4.1 does not require master-password re-authentication when retrieving or rotating an organization's SCIM API key, allowing an authenticated user with SCIM management privileges to obtain the key using only a valid session.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
8.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 43.34%
Affected Products (NVD)
VendorProductVersion
bitwardenserver
𝑥
< 2026.4.1
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
bitwardenbitwarden
𝑥
< 2026.4.1
CNA
Common Weakness Enumeration
References
https://github.com/bitwarden/server/commit/eb251d9bf80724c87b187661783b9354d1784083
https://github.com/bitwarden/server/pull/7403
https://github.com/bitwarden/server/releases/tag/v2026.4.1
https://sanjokkarki.com.np/blog/bitwarden-scim-key-bypass
https://www.vulncheck.com/advisories/bitwarden-server-authentication-bypass-via-scim-api-key