CVE-2021-38354: GNU-Mailman Integration <= 1.0.6 Reflected Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-09-10 · updated 2026-06-17
Weakness: CWE-79

Description

The GNU-Mailman Integration WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the gm_error parameter found in the ~/includes/admin/mailing-lists-page.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.0.6.

Affected products

GNU-Mailman Integration: through 1.0.6

References

https://plugins.trac.wordpress.org/browser/gnu-mailman-integration/trunk/includes/admin/mailing-lists-page.php?rev=859898#L34
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-38354
https://plugins.trac.wordpress.org/browser/gnu-mailman-integration/trunk/includes/admin/mailing-lists-page.php?rev=859898#L34
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-38354

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