CVE-2025-13840 Cross-site scripting in Bukazu Search Widget
Authenticated attackers can inject arbitrary web scripts via the shortcode attribute, leading to stored XSS execution on victim pages.
- 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-2025-13840?
CVE-2025-13840 is a medium-severity cross-site scripting vulnerability in bobvanoorschot Bukazu Search Widget, published on 12 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The BUKAZU Search widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'shortcode' parameter of the 'bukazu_search' shortcode in all versions up to, and including, 3.3.2 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-2025-13840?
How do I fix CVE-2025-13840?
No fix has been published for CVE-2025-13840 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-2025-13840 being exploited?
There is no known exploitation of CVE-2025-13840 in the wild and no public exploit code.
Sources
Also known as GHSA-x5rv-rq98-7w2m.