CVE-2026-107757 json
Gallery Custom Links <= 2.3.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Comment Author Display Name + Comment HTML Comment Body
published 2026-10-14 26 d ago modified 2026-10-14 26 d ago also EUVD-2026-100914
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 26 d ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- tigroumeow Gallery Custom Links
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/f37a0db8-b13c-4d9f-bc6f-88576f9e3862?source=cve
- plugins.trac.wordpress.org /browser/gallery-custom-links/tags/2.3.3/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simp
- plugins.trac.wordpress.org /browser/gallery-custom-links/tags/2.3.3/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simp
- plugins.trac.wordpress.org /browser/gallery-custom-links/tags/2.3.3/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simp
- plugins.trac.wordpress.org /browser/gallery-custom-links/tags/2.3.3/classes/core.php#L215
- plugins.trac.wordpress.org /browser/gallery-custom-links/tags/2.3.3/classes/core.php#L103
- plugins.trac.wordpress.org /changeset/3737485/gallery-custom-links
- plugins.trac.wordpress.org /changeset/3737485/gallery-custom-links/trunk/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib
Sources
- CVE List CVE-2026-107757
- NVD CVE-2026-107757
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.