CVE-2025-15386 Responsive Lightbox & Gallery < 2.6.1 - Unauthenticated Stored XSS
Unauthenticated attackers can inject malicious scripts via comments when lightbox for comments is enabled, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-15386?
CVE-2025-15386 is a high-severity cross-site scripting vulnerability in Unknown Responsive Lightbox & Gallery, published on 24 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Responsive Lightbox & Gallery WordPress plugin before 2.6.1 is vulnerable to an Unauthenticated Stored-XSS attack due to flawed regex replacement rules that can be abused by posting a comment with a malicious link when lightbox for comments are enabled and then approved.
Which versions are affected by CVE-2025-15386?
How do I fix CVE-2025-15386?
No fix has been published for CVE-2025-15386 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-15386 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15386 exists.
Sources
Also known as GHSA-mcwp-v5q8-7gcp.