CVE-2025-3649 LightPress Lightbox < 2.3.4 - Contributor+ Stored XSS

Medium 6.8 Published Updated

Contributors can inject malicious scripts via download links in LightPress Lightbox, leading to stored XSS attacks against site visitors.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2025-3649?

CVE-2025-3649 is a medium-severity cross-site scripting vulnerability in Unknown LightPress Lightbox, published on 12 May 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

The LightPress Lightbox WordPress plugin before 2.3.4 does not check download links point to valid, non-Javascript URLs, allowing users with at least the contributor role to conduct Stored XSS attacks.

Weakness: CWE-79

Which versions are affected by CVE-2025-3649?

It affects 1 product.

Products include Lightpress Lightbox.

How do I fix CVE-2025-3649?

No fix has been published for CVE-2025-3649 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-2025-3649 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3649 exists.

Sources

Also known as GHSA-f7g9-mhw7-w4wj.

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