CVE-2026-116563 json
Photo Gallery, Sliders, Proofing and Themes <= 4.5.4 - Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment `title` Attribute via Shutter Lightbox innerHTML
published 9d ago modified 7d ago also EUVD-2026-114573
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
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.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8d ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- smub Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/18dc9c01-c849-40c3-87ec-5eebc9660aff?source=cve
- plugins.trac.wordpress.org /browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter/shutter.js#L197
- plugins.trac.wordpress.org /browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter_reloaded/shutter.js#L247
- plugins.trac.wordpress.org /browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter/shutter.js#L67
- plugins.trac.wordpress.org /browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter_reloaded/shutter.js#L75
- plugins.trac.wordpress.org /browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter/nextgen_shutter.js#L120
- plugins.trac.wordpress.org /browser/nextgen-gallery/tags/4.5.4/static/Lightbox/shutter_reloaded/nextgen_shutter_reloaded.js#L118
- plugins.trac.wordpress.org /changeset/3773860/nextgen-gallery/trunk/static/Lightbox/shutter/shutter.js
Sources
- CVE List CVE-2026-116563
- NVD CVE-2026-116563
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