CVE-2025-63588 Cross-site scripting in n/a
Unauthenticated reflected XSS in CMSimpleXH allows attackers to execute arbitrary JavaScript, potentially stealing session cookies or credentials.
- 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-2025-63588?
CVE-2025-63588 is a high-severity cross-site scripting vulnerability in n/a, published on 6 Nov 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
An unauthenticated reflected cross-site scripting vulnerability in the query handling of CMSimpleXH allows remote attackers to inject and execute arbitrary JavaScript in a victim's browser via a crafted request (e.g., a maliciously crafted POST login). Successful exploitation may lead to theft of session cookies, credential disclosure, or other client-side impacts.
Weakness: CWE-79
Which versions are affected by CVE-2025-63588?
It affects 1 product.
Products include Cmsimple-Xh Cmsimple Xh.
How do I fix CVE-2025-63588?
No fix has been published for CVE-2025-63588 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-2025-63588 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63588 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gj82-c7f3-xr2m.