Vulnerability DatabaseCVE-2026-43638
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CVE-2026-43638
Published:May 11, 2026
Updated:May 16, 2026
Bitwarden Server prior to v2026.4.1 contains a missing authorization vulnerability that allows any authenticated user to write ciphers into an arbitrary organization via "POST /ciphers/import-organization" by submitting an empty "collections" array, which causes the server-side permission check to be skipped.
Affected Packages
https://github.com/bitwarden/server.git (GITHUB):
Affected version(s) >=v1.0.0 <v2026.4.1
Fix Suggestion:
Update to version v2026.4.1
Related Resources (5)
https://github.com/bitwarden/server/pull/7394
https://sanjokkarki.com.np/blog/bitwarden-import-org-bypass
https://github.com/bitwarden/server/commit/ebbf6dd0fa752114c09d73abb48ce32a50476758
https://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-organization-cipher-import
https://github.com/bitwarden/server/releases/tag/v2026.4.1
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Missing Authorization
CWE-862
EPSS
Base Score:
0.03