CVE-2025-15378 AJS Footnotes <= 1.0 - Unauthenticated Stored Cross-Site Scripting
Unauthenticated attackers can inject arbitrary scripts into WordPress pages via the AJS Footnotes plugin, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-15378?
CVE-2025-15378 is a high-severity cross-site scripting vulnerability in ajseidl AJS Footnotes, published on 14 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The AJS Footnotes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'note_list_class' and 'popup_display_effect_in' parameters in all versions up to, and including, 1.0 due to missing authorization and nonce verification on settings save, as well as insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to update plugin settings and inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2025-15378?
How do I fix CVE-2025-15378?
No fix has been published for CVE-2025-15378 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-2025-15378 being exploited?
There is no known exploitation of CVE-2025-15378 in the wild and no public exploit code.
Sources
Also known as GHSA-hhp5-wr44-w3j5.