CVE-2025-4955 tarteaucitron.io < 1.9.5 - Contributor+ Stored XSS
Contributors can inject malicious scripts via unsanitized YouTube oEmbed parameters, leading to stored XSS attacks on the site.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-4955?
CVE-2025-4955 is a medium-severity cross-site scripting vulnerability in Unknown tarteaucitron.io, published on 18 Jun 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The tarteaucitron.io WordPress plugin before 1.9.5 uses query parameters from YouTube oEmbed URLs without sanitizing these parameters correctly, which could allow users with the contributor role and above to perform Stored Cross-site Scripting attacks.
Weakness: CWE-79
Which versions are affected by CVE-2025-4955?
It affects 1 product.
Products include Amauri Tarteaucitron.io.
How do I fix CVE-2025-4955?
No fix has been published for CVE-2025-4955 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-2025-4955 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4955 exists.
Sources
Also known as GHSA-23mx-m43g-r4fh.