CVE-2026-43640 - Vulnerability Analysis
HighCVSS: 8.1Last Updated: May 11, 2026
Bitwarden Server - Authentication Bypass
Overview
Bitwarden Server < v2026.4.1 contains a broken authentication caused by lack of master-password re-authentication when retrieving or rotating an organization's SCIM API key, letting authenticated users with SCIM management privileges obtain the key using only a valid session.
Severity & Score
Impact
Authenticated users with SCIM management privileges can obtain the organization's SCIM API key, risking unauthorized access and potential data compromise.
Mitigation
Update to version v2026.4.1 or later.
References
- https://www.vulncheck.com/advisories/bitwarden-server-authentication-bypass-via-scim-api-key
- 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
Social Media Activity(2 posts)
š CVE-2026-43640 - High (8.1) 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 ... š https://www.thehackerwire.com/vulnerability/CVE-2026-43640/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack
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š CVE-2026-43640 - High (8.1) 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 ... š https://www.thehackerwire.com/vulnerability/CVE-2026-43640/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack
View original postRelated Resources
Details
- CVE ID
- CVE-2026-43640
- Severity
- High
- CVSS Score
- 8.1
- Type
- broken_authentication
- Status
- new
- EPSS
- 5.5%
- Social Posts
- 2
CWE
- CWE-303
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N