CVE-2025-50049 WordPress Modern Footnotes plugin <= 1.4.19 - Cross Site Scripting (XSS) Vulnerability

Medium 6.5 Published Updated

Stored XSS in Modern Footnotes plugin allows attackers to inject malicious scripts into web pages viewed by other users.

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-2025-50049?

CVE-2025-50049 is a medium-severity cross-site scripting vulnerability in prismtechstudios Modern Footnotes, published on 20 Jun 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 prismtechstudios Modern Footnotes modern-footnotes allows Stored XSS.This issue affects Modern Footnotes: from n/a through <= 1.4.19.

Weakness: CWE-79

Which versions are affected by CVE-2025-50049?

How do I fix CVE-2025-50049?

No fix has been published for CVE-2025-50049 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-2025-50049 being exploited?

There is no known exploitation of CVE-2025-50049 in the wild and no public exploit code.

Sources

Also known as GHSA-x8rx-wj73-hw35.

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