What is the CVSS score of CVE-2026-27181?

CVE-2026-27181 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Majordomo are affected by CVE-2026-27181?

MajorDoMo installations are vulnerable to unauthorized module removal by unauthenticated attackers, potentially disabling critical functionality and causing service disruption.

Is there a public PoC exploit available for CVE-2026-27181?

Yes, a public proof-of-concept exploit is available for CVE-2026-27181. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-27181?

Within 24 hours: Inventory all MajorDoMo deployments and assess exposure (internet-facing vs. internal-only). Within 7 days: Implement network access controls to restrict market module endpoints and disable the market module if not operationally required. Within 30 days: Monitor vendor communications for patch availability and establish upgrade testing procedures; consider alternative solutions if patches remain unavailable.

Majordomo CVE-2026-27181

HIGH

Missing Authorization (CWE-862)

2026-02-18 disclosure@vulncheck.com

Authentication Bypass Majordomo

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 20, 2026 - 19:51 vuln.today

Public exploit code

CVE Published

Feb 18, 2026 - 22:16 nvd

HIGH 7.5

DescriptionCVE.org

MajorDoMo (aka Major Domestic Module) allows unauthenticated arbitrary module uninstallation through the market module. The market module's admin() method reads gr('mode') from $_REQUEST and assigns it to $this->mode at the start of execution, making all mode-gated code paths reachable without authentication via the /objects/?module=market endpoint. The uninstall mode handler calls uninstallPlugin(), which deletes module records from the database, executes the module's uninstall() method via eval(), recursively deletes the module's directory and template files using removeTree(), and removes associated cycle scripts. An attacker can iterate through module names and wipe the entire MajorDoMo installation with a series of unauthenticated GET requests.

Articles & Coverage 1

vulnerability.circl.lu MajorDoMo Multiple Critical RCE Vulnerabilities (CVE-2026-27174 to CVE-2026-27181) Feb 19, 2026

AnalysisAI

Unauthenticated module deletion in Majordomo's market module allows remote attackers to completely disable installations through a series of GET requests. The vulnerability stems from improper authentication checks that expose the uninstall functionality without requiring credentials, enabling attackers to iteratively remove all modules and associated files. Public exploit code exists for this high-severity flaw, and no patch is currently available.

Technical ContextAI

Classified as CWE-862 (Missing Authorization). Affects the market component of Majordomo. MajorDoMo (aka Major Domestic Module) allows unauthenticated arbitrary module uninstallation through the market module. The market module's admin() method reads gr('mode') from $_REQUEST and assigns it to $this->mode at the start of execution, making all mode-gated code paths reachable without authentication via the /objects/?module=market endpoint. The uninstall mode handler calls uninstallPlugin(), which deletes module records from the database, executes the module's uninstall() method via eva