CVE-2024-2841 Cross-site scripting in Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE

Medium 6.4 Published 29 Mar 2024 Updated 8 Apr 2026

Authenticated contributors can inject arbitrary scripts into WordPress pages via Otter Blocks widgets, leading to code execution when viewed.

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-2024-2841?

CVE-2024-2841 is a medium-severity cross-site scripting vulnerability in themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE, published on 29 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's widgets in all versions up to, and including, 2.6.5 due to insufficient input sanitization and output escaping on user supplied attributes such as 'id'. This makes it possible for authenticated attackers, with contributor-level access and above, to 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-2024-2841?

It affects 1 product.

Products include Themeisle Otter Blocks.

How do I fix CVE-2024-2841?

No fix has been published for CVE-2024-2841 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-2024-2841 being exploited?

There is no known exploitation of CVE-2024-2841 in the wild and no public exploit code.

Sources

Also known as GHSA-rg8g-7365-wq9j.