CVE-2025-23791 WordPress Horizontal Line Shortcode Plugin <= 1.0 - Stored Cross Site Scripting (XSS) vulnerability
Attackers can inject malicious scripts via stored XSS in the Horizontal Line Shortcode plugin, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-23791?
CVE-2025-23791 is a medium-severity cross-site scripting vulnerability in mikakaltoft Horizontal Line Shortcode, published on 16 Jan 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in mikakaltoft Horizontal Line Shortcode horizontal-line-shortcode allows Stored XSS.This issue affects Horizontal Line Shortcode: from n/a through <= 1.0.
Weakness: CWE-79
Which versions are affected by CVE-2025-23791?
How do I fix CVE-2025-23791?
No fix has been published for CVE-2025-23791 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-2025-23791 being exploited?
There is no known exploitation of CVE-2025-23791 in the wild and no public exploit code.
Sources
Also known as GHSA-grcv-9grj-gmww.