CVE-2026-43640

Bitwarden Server < 2026.4.1 Authentication Bypass via SCIM API Key

Published May 11, 2026 CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Bitwarden
Bitwarden server
Vendors & Products Bitwarden
Bitwarden server
Type Values Removed Values Added
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.
Title Bitwarden Server < 2026.4.1 Authentication Bypass via SCIM API Key
Weaknesses CWE-303
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 8, 2026, 2:03 PM
Reserved
May 1, 2026, 6:22 PM
Status
Analyzed
Published
May 11, 2026, 6:16 PM
Modified
Oct 26, 2026, 6:10 PM