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CVE-2026-27181

7.5 · HIGH

MajorDoMo (aka Major Domestic Module) allows unauthenticated arbitrary module uninstallation through the market module.

Published Feb 18, 2026CWE-862EPSS 1.05%

Overview

CVE-2026-27181 is a high-severity vulnerability. It was published on February 18, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refchocapikk.com/posts/2026/majordomo-revisited/GitHubgithub.com/sergejey/majordomo/pull/1177Refwww.vulncheck.com/advisories/majordomo-unauthenticated-module-uninstall-via-market-endpoint

How CyberStrike helps

Frequently asked questions

What is CVE-2026-27181?

CVE-2026-27181 is a high-severity vulnerability. It was published on February 18, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-27181?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-27181?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-27181?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-27181 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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