CVE-2024-8964 Cross-site scripting in Image Optimizer, Resizer and CDN – Sirv

Medium 6.4 Published 8 Oct 2024 Updated 8 Apr 2026

Authenticated attackers can inject arbitrary scripts via SVG uploads, leading to stored XSS execution for other users.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2024-8964?

CVE-2024-8964 is a medium-severity cross-site scripting vulnerability in Image Optimizer, Resizer and CDN – Sirv, published on 8 Oct 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 7.2.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file.

Weakness: CWE-79

Which versions are affected by CVE-2024-8964?

It affects 1 product.

Products include Sirv Sirv.

How do I fix CVE-2024-8964?

No fix has been published for CVE-2024-8964 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-2024-8964 being exploited?

There is no known exploitation of CVE-2024-8964 in the wild and no public exploit code.

Sources

Also known as GHSA-6cpm-g48h-c92x.