CVE-2025-12359
CVE-2025-12359 — Responsive Lightbox & Gallery <= 2.5.3 - Authenticated (Author+) Server-Side Request Forgery
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.
Published Updated Sources: cvelistV5, Wordfence
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.
Exploitation
Unreported
no source claims exploitation
EPSS
0%
chance of exploitation in 30 days
CVSS base
5.4
MEDIUM
CISA SSVC assessment
Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.
Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script all four kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component
Affected scope
The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.
Vendors (1)
Products (1)
Every base score collected
Sources score independently and disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Source |
|---|---|---|---|---|---|
| 5.4 | CVSS 3.1 | MEDIUM | — | — | cvelistV5 |
Weakness & attack patterns
- CWE-918
References
7 on the record
- www.wordfence.com/threat-intel/vulnerabilities/id/7f4c0bd6-f289-4a52-ac11-345076c32d84?source=cve
reference
- plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-frontend.php#L1531
reference
- plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-fast-image.php#L25
reference
- plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/functions.php#L108
reference
- plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-galleries.php#L3648
reference
- research.cleantalk.org/cve-2025-12359
reference
- plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3397940%40responsive-lightbox%2Ftrunk&old=3358021%40responsive-lightbox%2Ftrunk&sfp_email=&sfph_mail=
reference
Elsewhere on this site
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.