CVE-2024-8536 Ultimate Blocks < 3.2.2 - Contributor+ Stored XSS

What is CVE-2024-8536?

CVE-2024-8536 is a medium-severity cross-site scripting vulnerability in Unknown Ultimate Blocks, published on 30 Sep 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

The Ultimate Blocks WordPress plugin before 3.2.2 does not validate and escape some of its block attributes before outputting them back in a page/post where the block is embed, 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-2024-8536?

It affects 1 product.

Products include Dotcamp Ultimate Blocks.

How do I fix CVE-2024-8536?

No fix has been published for CVE-2024-8536 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-2024-8536 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-8536 exists.

Other vulnerabilities in Unknown Ultimate Blocks

• CVE-2024-37457 WordPress Ultimate Blocks – WordPress Blocks Plugin plugin <= 3.1.9 - Cross Site Scripting (XSS) vulnerability Medium 6.5
• CVE-2025-2918 Cross-site scripting in Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor Medium 6.4
• CVE-2024-3513 Cross-site scripting in Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor Medium 6.4
• CVE-2024-4268 Cross-site scripting in Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor Medium 6.4
• CVE-2024-4655 Ultimate Blocks < 3.1.9 - Contributor+ Stored XSS Medium 6.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pwxr-xm9v-qfvh.