CVE-2026-43638

5.4 MEDIUM
Published: May 11, 2026 Modified: May 16, 2026
View on NVD

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/bitwarden/server/commit/ebbf6dd0fa752114c09d73abb48ce32a50476758
Source: disclosure@vulncheck.com
Patch
https://github.com/bitwarden/server/pull/7394
Source: disclosure@vulncheck.com
Issue Tracking Patch
https://github.com/bitwarden/server/releases/tag/v2026.4.1
Source: disclosure@vulncheck.com
Release Notes
https://sanjokkarki.com.np/blog/bitwarden-import-org-bypass
Source: disclosure@vulncheck.com
Exploit Third Party Advisory
https://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-organization-cipher-import
Source: disclosure@vulncheck.com
Third Party Advisory

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.4 / 10.0
EPSS (Exploit Probability)
0.2%
9th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-862

Affected Vendors

bitwarden

Related CVEs

CVE-2026-48777 N/A
CVE-2026-47750 7.8
CVE-2026-47747 7.8
CVE-2026-46448 5.4
CVE-2026-22313 9.1