CVE-2026-27176: MajorDoMo (aka Major Domestic Module) contains a reflected cross-site scripting (XSS) vulnerability in command

Routine

MEDIUM 6.1MITIGATE

CVE-2026-27176 is a medium-severity flaw (CVSS 6.1) affecting majordomo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MajorDoMo (aka Major Domestic Module) contains a reflected cross-site scripting (XSS) vulnerability in command.php. The $qry parameter is rendered directly into the HTML page without sanitization via htmlspecialchars(), both in an input field value attribute and in a paragraph element. An attacker can inject arbitrary JavaScript by crafting a URL with malicious content in the qry parameter.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-02-18
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: mjdm

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-18 22:16 UTCPublished CVE record published
2026-06-17 10:26 UTCUpdated Record last modified

mjdm majordomo MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy majordomo || rpm -q majordomo || majordomo --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: MajorDoMo - Cross-Site Scripting

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27176?

majordomo: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-27176 being exploited?

CVE-2026-27176 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27176 affect?

CVE-2026-27176 affects majordomo. Severity is medium (CVSS 6.1). MajorDoMo (aka Major Domestic Module) contains a reflected cross-site scripting (XSS) vulnerability in command.php. The $qry parameter is rendered directly into the HTML page without sanitization via htmlspecialchars(), both in an input fie

How urgent is CVE-2026-27176?

Priority 37/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-27181 HIGH 7.5 MITIGATE MajorDoMo (aka Major Domestic Module) allows unauthenticated arbitrary module uninstallation through the marke
CVE-2026-27180 CRITICAL 9.8 MITIGATE MajorDoMo (aka Major Domestic Module) is vulnerable to unauthenticated remote code execution through supply ch
CVE-2026-27179 HIGH 8.2 MITIGATE MajorDoMo (aka Major Domestic Module) contains an unauthenticated SQL injection vulnerability in the commands
CVE-2026-27178 HIGH 7.2 MITIGATE MajorDoMo (aka Major Domestic Module) contains a stored cross-site scripting (XSS) vulnerability through metho
CVE-2026-27177 HIGH 7.2 MITIGATE MajorDoMo (aka Major Domestic Module) contains a stored cross-site scripting (XSS) vulnerability via the /obje

References

← Back to latest CVEs