CVE-2025-2537 Cross-site scripting in Auto Thickbox
Authenticated contributors can inject arbitrary scripts via ThickBox library in multiple WordPress plugins, leading to stored XSS attacks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-2537?
CVE-2025-2537 is a medium-severity cross-site scripting vulnerability in denis-de-bernardy Auto Thickbox, published on 3 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Multiple plugins for WordPress are vulnerable to Stored Cross-Site Scripting via the plugin's bundled ThickBox JavaScript library (version 3.1) in various versions due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2025-2537?
How do I fix CVE-2025-2537?
No fix has been published for CVE-2025-2537 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-2025-2537 being exploited?
There is no known exploitation of CVE-2025-2537 in the wild and no public exploit code.
Sources
Also known as GHSA-m5fw-x833-hv4q.