CVE-2026-43640
Bitwarden Server < 2026.4.1 Authentication Bypass via SCIM API Key
- State
- Published
- Severity
- 8.6 High
- Published
- May 11, 2026
- Updated
- Jul 14, 2026
- Reserved
- May 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | 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 | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-303 Incorrect Implementation of Authentication Algorithm
Affected Products
| Product | Versions |
|---|---|
serverbitwarden |
|
References
- https://sanjokkarki.com.np/blog/bitwarden-scim-key-bypasstechnical-descriptionexploit
- https://github.com/bitwarden/server/releases/tag/v2026.4.1release-notes
- https://github.com/bitwarden/server/pull/7403issue-tracking
- https://github.com/bitwarden/server/commit/eb251d9bf80724c87b187661783b9354d1784083patch
- https://www.vulncheck.com/advisories/bitwarden-server-authentication-bypass-via-scim-api-keythird-party-advisory
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