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  4. CVE 2026 43638 bitwarden server 202641 missing authorization via
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Back to active CVEs
Medium · CVSS 5.3CVE-2026-43638

Bitwarden Server < 2026.4.1 Missing Authorization via Organization Cipher ImportCVE-2026-43638

Answer in brief

CVE-2026-43638 records a Medium severity (CVSS 5.3) vulnerability in Bitwarden Server < 2026.4.1 Missing Authorization via Organization Cipher Import. The current sources do not mark it as known exploited. The current feed maps bitwarden/server (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 11, 2026Updated Nov 8, 2026Source checked Nov 8, 2026First seen by HOL Oct 28, 2026Material review Nov 8, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps bitwarden/server (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
bitwarden/servergeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for bitwarden/server.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    May 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 28, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencesanjokkarki.com.np
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • OpenEMR before 8.3.0 Missing Authorization and IDOR in Prior-Authorizations ModuleAlso CWE-862
  • OpenEMR before 8.3.0 IDOR via DICOM library/ajax/upload.php EndpointAlso CWE-862
  • OpenEMR before 8.3.0 Missing Authorization via sl_eob_patient_note.phpAlso CWE-862
  • OpenEMR before 8.3.0 Missing Authorization via delete_Recall in save.phpAlso CWE-862
  • OpenEMR before 8.3.0 Missing Authorization via addRecall in save.phpAlso CWE-862
  • OpenEMR before 8.4.0 Authorization Bypass via FHIR QuestionnaireResponse APICSRFTOKENAlso CWE-862

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-862
Source
CVE List V5
Source checked
Nov 8, 2026
References
5 linked sources
Open source record