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CVE-2026-107757

MEDIUM 4.9 CVSS 3.1
Published
October 14, 2026
Last modified
October 14, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The Gallery Custom Links plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'display_name (profile.php) + comment (wp-comments-post.php)' parameter in all versions up to, and including, 2.3.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit requires two coordinated inputs from the same authenticated attacker: an HTML comment payload stored in a comment body (preserved verbatim by WordPress comment kses) and a matching simple_html_dom noise key placed in the attacker's display_name (which survives esc_attr() intact), with substitution occurring after both filters have run during the plugin's default-on output-buffering pass over the full rendered page.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • tigroumeow Gallery Custom Links — Up to and including 2.3.3

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/gallery-custom-links/tags/2.3.3/classes/core.php#L103
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/gallery-custom-links/tags/2.3.3/classes/core.php#L215
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/gallery-custom-links/tags/2.3.3/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php#L2112
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/gallery-custom-links/tags/2.3.3/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php#L2207
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/gallery-custom-links/tags/2.3.3/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php#L502
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3737485/gallery-custom-links
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3737485/gallery-custom-links/trunk/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/f37a0db8-b13c-4d9f-bc6f-88576f9e3862?source=cve
  • nvd.nist.gov Official NVD record