CVE-2026-43640

high

Description

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.

References

https://www.vulncheck.com/advisories/bitwarden-server-authentication-bypass-via-scim-api-key

https://sanjokkarki.com.np/blog/bitwarden-scim-key-bypass

https://github.com/bitwarden/server/releases/tag/v2026.4.1

https://github.com/bitwarden/server/pull/7403

https://github.com/bitwarden/server/commit/eb251d9bf80724c87b187661783b9354d1784083

Details

Source: Mitre, NVD

Published: 2026-05-11

Updated: 2026-05-16

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.1

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

Severity: High

CVSS v4

Base Score: 8.6

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

Severity: High

EPSS

EPSS: 0.00055