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CVE-2024-1840 WPBakery Visual Composer <= 7.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Author

Medium 6.4 Published Updated

Authenticated contributors can inject arbitrary scripts via the Post Author tag, 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-2024-1840?

CVE-2024-1840 is a medium-severity cross-site scripting vulnerability in WPBakery Page Builder, published on 2 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The wpbakery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Post Author tag attribute in all versions up to, and including, 7.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor access or higher, 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-2024-1840?

It affects 1 product.

Products include Wpbakery Page Builder.

How do I fix CVE-2024-1840?

No fix has been published for CVE-2024-1840 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-2024-1840 being exploited?

There is no known exploitation of CVE-2024-1840 in the wild and no public exploit code.

Sources

Also known as GHSA-3v58-c97h-7mc9.

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