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  4. CVE 2026 121139 rapid7 metasploit framework web service
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Back to active CVEs
High · CVSS 7.3CVE-2026-121139

Rapid7 Metasploit Framework Web Service unauthenticated bootstrap window allows creation of an administrator account without authenticationCVE-2026-121139

Answer in brief

CVE-2026-121139 records a High severity (CVSS 7.3) vulnerability in Rapid7 Metasploit Framework Web Service unauthenticated bootstrap window allows creation of an administrator account without authentication. The current sources do not mark it as known exploited. The current feed maps Rapid7/Metasploit Framework (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 Nov 5, 2026Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.3. 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 Rapid7/Metasploit Framework (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Rapid7/Metasploit Frameworkgeneric>=0 <6.5.96.5.9

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Rapid7/Metasploit Framework.
  2. 2Review the reported fix. Update Rapid7/Metasploit Framework to 6.5.9 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 5, 2026

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

  2. Source modified

    Nov 5, 2026

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

  3. First seen by HOL

    Nov 5, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

The Rapid7 Metasploit msf-ws suffers from a missing authentication vulnerability whereby the REST API grants an unauthenticated "bootstrap" exemption so that the very first administrator can be created when the users table is empty. While the table is empty, POST /api/v1/users is exempt from authentication by design: the route handler calls warden.authenticate!(scope: :admin_api), which resolves to AdminApiToken. The inherited ApiToken#authenticate! short-circuits and returns success!() whenever msf.auth_initialized is false, without ever evaluating AdminApiToken's administrator check. In that state the endpoint creates a user — including an administrator — for an entirely unauthenticated caller. This issue has been fixed in version 6.5.9.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • OpenBMB Internet of Agents WebSocket Connection Manager app.py ConnectionManager.connect missing authenticationAlso CWE-306

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-306
Source
CVE List V5
Source checked
Nov 5, 2026
References
1 linked source
Open source record