CVE-2026-116563
Photo Gallery, Sliders, Proofing and Themes <= 4.5.4 - Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment `title` Attribute via Shutter Lightbox innerHTML
Description
The Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.5.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the site to have Shutter or Shutter Reloaded selected as the active lightbox, and the injected comment must be approved through WordPress's standard moderation workflow before the payload is rendered to other visitors.
INFO
Published Date :
Oct. 31, 2026, 6:16 a.m.
Last Modified :
Oct. 31, 2026, 6:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the NextGEN Gallery plugin.
- Ensure input sanitization and output escaping are enabled.
- Review comments for malicious content.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-116563.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-116563 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-116563
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-116563 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-116563 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Oct. 31, 2026
Action Type Old Value New Value Added Description The Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.5.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the site to have Shutter or Shutter Reloaded selected as the active lightbox, and the injected comment must be approved through WordPress's standard moderation workflow before the payload is rendered to other visitors. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/116xxx/CVE-2026-116563.json">CVE-2026-116563</a> Added Reference https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter/nextgen_shutter.js#L120 Added Reference https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter/shutter.js#L197 Added Reference https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter/shutter.js#L67 Added Reference https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter_reloaded/nextgen_shutter_reloaded.js#L118 Added Reference https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter_reloaded/shutter.js#L247 Added Reference https://plugins.trac.wordpress.org/browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter_reloaded/shutter.js#L75 Added Reference https://plugins.trac.wordpress.org/changeset/3773860/nextgen-gallery/trunk/static/Lightbox/shutter/shutter.js Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/18dc9c01-c849-40c3-87ec-5eebc9660aff?source=cve