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CVE-2021-24241 Advanced Custom Field Pro < 5.9.1 - Reflected Cross-Site Scripting (XSS)

Medium 6.1 Published Updated

Attackers can execute arbitrary scripts in the context of other users via a reflected XSS vulnerability in the Advanced Custom Fields Pro update settings page.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2021-24241?

CVE-2021-24241 is a medium-severity cross-site scripting vulnerability in Unknown Advanced Custom Fields Pro, published on 22 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The Advanced Custom Fields Pro WordPress plugin before 5.9.1 did not properly escape the generated update URL when outputting it in an attribute, leading to a reflected Cross-Site Scripting issue in the update settings page.

Weakness: CWE-79

Which versions are affected by CVE-2021-24241?

It affects 1 product.

Products include Advancedcustomfields Advanced Custom Fields.

How do I fix CVE-2021-24241?

No fix has been published for CVE-2021-24241 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-2021-24241 being exploited?

There is no known exploitation of CVE-2021-24241 in the wild and no public exploit code.

Sources

Also known as GHSA-qrc3-2vgc-v73w.

Is CVE-2021-24241 in your software?

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