CVE-2026-43640

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.

CVSS 4.0

8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS

0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-26)

CWE

CWE-303

Published

2026-05-11

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• bitwarden:server

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

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