CVE-2024-3239 PostX < 4.0.2 - Contributor+ Stored XSS

What is CVE-2024-3239?

CVE-2024-3239 is a medium-severity cross-site scripting vulnerability in Unknown Post Grid Gutenberg Blocks and WordPress Blog Plugin , published on 13 May 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 Post Grid Gutenberg Blocks and WordPress Blog Plugin WordPress plugin before 4.0.2 does not validate and escape some of its block options 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-2024-3239?

It affects 1 product.

Products include Wpxpo Postx.

How do I fix CVE-2024-3239?

No fix has been published for CVE-2024-3239 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-2024-3239 being exploited?

There is no known exploitation of CVE-2024-3239 in the wild and no public exploit code.

Other vulnerabilities in Unknown Post Grid Gutenberg Blocks and WordPress Blog Plugin

• CVE-2024-10728 PostX <= 4.1.16 - Missing Authorization to Arbitrary Plugin Installation/Activation High 8.8
• CVE-2023-36385 WordPress PostX – Gutenberg Blocks for Post Grid Plugin <= 2.9.9 is vulnerable to Cross Site Scripting (XSS) High 7.1
• CVE-2024-4305 PostX < 4.1.0 - Contributor+ Stored XSS Medium 6.8
• CVE-2024-50443 WordPress PostX plugin <= 4.1.12 - Cross Site Scripting (XSS) vulnerability Medium 6.5
• CVE-2023-3992 PostX - Gutenberg Post Grid Blocks < 3.0.6 - Reflected Cross-Site Scripting Medium 6.1

Sources

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

Also known as GHSA-928w-mwq7-xvqr.