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CVE-2025-3276 SKT Blocks – Gutenberg based Page Builder <= 1.9 - Authenticated (Contributor+) Stored Cross-Site Scripting

Medium 6.4 Published Updated

Authenticated contributors can inject arbitrary scripts via the Post Carousel block, 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-2025-3276?

CVE-2025-3276 is a medium-severity cross-site scripting vulnerability in sonalsinha21 SKT Blocks – Gutenberg based Page Builder, published on 12 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The SKT Blocks – Gutenberg based Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Post Carousel block in all versions up to, and including, 1.9 due to insufficient input sanitization and output escaping. 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-2025-3276?

It affects 1 product.

Products include Sktthemes Skt Blocks.

How do I fix CVE-2025-3276?

No fix has been published for CVE-2025-3276 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-2025-3276 being exploited?

There is no known exploitation of CVE-2025-3276 in the wild and no public exploit code.

Sources

Also known as GHSA-8388-vmf2-8gm7.

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