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Majordomo CVE-2026-27181

HIGH
Missing Authorization (CWE-862)
2026-02-18 disclosure@vulncheck.com
7.5
CVSS 3.1 · NVD
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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

3
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.

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. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Access market module endpoint
Exploit
Set mode parameter to uninstall
Execution
Invoke uninstallPlugin function
Impact
Delete module records and directories

Vulnerability AssessmentAI

Exploitation MajorDoMo with market module enabled accessible at /objects/?module=market endpoint without authentication. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.5 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker without authentication could exploit this vulnerability to compromise the affected system.
Remediation Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all MajorDoMo deployments and assess exposure (internet-facing vs. …

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CVE-2026-27181 vulnerability details – vuln.today

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