CVE-2025-26557 WordPress ViperBar Plugin <= 2.0 - Reflected Cross Site Scripting (XSS) vulnerability
Attackers can execute arbitrary scripts in victim browsers via reflected XSS in the ViperBar WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-26557?
CVE-2025-26557 is a high-severity cross-site scripting vulnerability in viperchill ViperBar, published on 3 Mar 2025. An attacker can exploit it over the internet without logging in, 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 viperchill ViperBar viperbar allows Reflected XSS.This issue affects ViperBar: from n/a through <= 2.0.
Weakness: CWE-79
Which versions are affected by CVE-2025-26557?
How do I fix CVE-2025-26557?
No fix has been published for CVE-2025-26557 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-2025-26557 being exploited?
There is no known exploitation of CVE-2025-26557 in the wild and no public exploit code.
Sources
Also known as GHSA-hvr4-fqgg-4q98.