Responsive Lightbox & Gallery <= 2.5.3 - Authenticated (Author+) Server-Side Request Forgery
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.5.3 via the 'get_image_size_by_url' function. This is due to insufficient validation of user-supplied URLs when determining image dimensions for gallery items. This makes it possible for authenticated attackers, with Author-level access and above, to make web requests to arbitrary locations originating from the web application which can be used to query and modify information from internal services.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-12359
- 2026-10-03 Alias added: GHSA-x557-gw6m-864x
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7f4c0bd6-f289-4a52-ac11-345076c32d84?source=cve
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-frontend.php#L1531
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-fast-image.php#L25
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/functions.php#L108
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-galleries.php#L3648
- https://research.cleantalk.org/cve-2025-12359
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3397940%40responsive-lightbox%2Ftrunk&old=3358021%40responsive-lightbox%2Ftrunk&sfp_email=&sfph_mail=
More dFactory vulnerabilities
- TI-2025-03296 Responsive Lightbox & Gallery < 2.5.1 - Contributor+ Stored XSS CVSS 3.1MEDIUM 6.8
- TI-2025-04567 Responsive Lightbox & Gallery < 2.5.2 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2024-29513 WordPress Responsive Lightbox & Gallery plugin <= 2.4.7 - Broken Access Control vulnerability CVSS 3.1CRITICAL 9.8
- TI-2024-20628 WordPress Responsive Lightbox & Gallery plugin <= 2.4.6 - Broken Access Control vulnerability CVSS 3.1HIGH 8.8
- TI-2026-40435 WordPress Responsive Lightbox plugin <= 2.7.6 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2025-31910 WordPress Download Attachments plugin <= 1.3.1 - Insecure Direct Object References (IDOR) vulnerability CVSS 3.1MEDIUM 5.3
Sources
- CVE-2025-12359 · CVE Program
- CVE-2025-12359 · NVD
- FIRST EPSS
- GHSA-x557-gw6m-864x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences