CVE-2024-13896 WP-GeSHi-Highlight <= 1.4.3 - Author+ ReDoS
An attacker can cause a denial of service in the WP-GeSHi-Highlight WordPress plugin by submitting input that triggers excessive regular expression processing.
- 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-2024-13896?
CVE-2024-13896 is a medium-severity denial of service vulnerability in Unknown WP-GeSHi-Highlight — rock-solid syntax highlighting for 259 languages, published on 10 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The WP-GeSHi-Highlight — rock-solid syntax highlighting for 259 languages WordPress plugin through 1.4.3 processes user-supplied input as a regular expression via the wp_geshi_filter_replace_code() function, which could lead to Regular Expression Denial of Service (ReDoS) issue
Weakness: CWE-1333
Which versions are affected by CVE-2024-13896?
It affects 1 product.
Products include Jgehrcke Wp-Geshi-Highlight.
How do I fix CVE-2024-13896?
No fix has been published for CVE-2024-13896 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-13896 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-13896 exists.
Sources
Also known as GHSA-8h58-9hjg-3xqh.