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CVE Vulnerability Details :
CVE-2026-43638
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-11 May, 2026 | 17:13
Updated At-11 May, 2026 | 19:03
Rejected At-
▼CVE Numbering Authority (CNA)
Bitwarden Server < 2026.4.1 Missing Authorization via Organization Cipher Import

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 Products
Vendor
bitwarden
Product
server
Repo
https://github.com/bitwarden/server
Default Status
affected
Versions
Affected
  • From 0 before 2026.4.1 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-862Missing Authorization
Type: CWE
CWE ID: CWE-862
Description: Missing Authorization
Metrics
VersionBase scoreBase severityVector
4.05.3MEDIUM
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
3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Version: 4.0
Base score: 5.3
Base severity: MEDIUM
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
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Sanjok Karki
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://sanjokkarki.com.np/blog/bitwarden-import-org-bypass
technical-description
exploit
https://github.com/bitwarden/server/releases/tag/v2026.4.1
release-notes
https://github.com/bitwarden/server/pull/7394
issue-tracking
https://github.com/bitwarden/server/commit/ebbf6dd0fa752114c09d73abb48ce32a50476758
patch
https://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-organization-cipher-import
third-party-advisory
Hyperlink: https://sanjokkarki.com.np/blog/bitwarden-import-org-bypass
Resource:
technical-description
exploit
Hyperlink: https://github.com/bitwarden/server/releases/tag/v2026.4.1
Resource:
release-notes
Hyperlink: https://github.com/bitwarden/server/pull/7394
Resource:
issue-tracking
Hyperlink: https://github.com/bitwarden/server/commit/ebbf6dd0fa752114c09d73abb48ce32a50476758
Resource:
patch
Hyperlink: https://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-organization-cipher-import
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found