Vulnerability · Published Feb 18, 2026 · Assigned by VulnCheck

CVE-2026-27181MajorDoMo Unauthenticated Module Uninstall via Market Endpoint

High 7.5

In plain English

A high-severity missing authorization in MajorDoMo from sergejey. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.8%top 43.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
sergejey	MajorDoMo	0 – through *

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

MajorDoMo Revisited: What I Missed in 2023 third-party-advisory
Fix PR: sergejey/majordomo#1177 issue-tracking
VulnCheck Advisory: MajorDoMo Unauthenticated Module Uninstall via Market Endpoint third-party-advisory