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.

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History

Mon, 11 May 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 11 May 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Bitwarden
Bitwarden server
Vendors & Products Bitwarden
Bitwarden server

Mon, 11 May 2026 17:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Bitwarden Server < 2026.4.1 Missing Authorization via Organization Cipher Import
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-11T19:03:34.201Z

Reserved: 2026-05-01T18:22:45.642Z

Link: CVE-2026-43638

cve-icon Vulnrichment

Updated: 2026-05-11T18:21:23.769Z

cve-icon NVD

Status : Received

Published: 2026-05-11T18:16:36.823

Modified: 2026-05-11T18:16:36.823

Link: CVE-2026-43638

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-11T18:45:25Z

Weaknesses