CVE-2025-53351 WordPress Fidelo Snippet plugin <= 1.12 - Cross Site Scripting (XSS) vulnerability
Reflected XSS in Fidelo Snippet plugin allows attackers to inject malicious scripts into web pages viewed by other users.
- 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-2025-53351?
CVE-2025-53351 is a high-severity cross-site scripting vulnerability in Fidelo Snippet, published on 22 Oct 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 Fidelo Software GmbH Fidelo Snippet thebing-snippet allows Reflected XSS.This issue affects Fidelo Snippet: from n/a through <= 1.12.
Weakness: CWE-79
Which versions are affected by CVE-2025-53351?
How do I fix CVE-2025-53351?
No fix has been published for CVE-2025-53351 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-2025-53351 being exploited?
There is no known exploitation of CVE-2025-53351 in the wild and no public exploit code.
Sources
Also known as GHSA-qm7p-p2r5-v2jf.