CVE-2023-2802 Ultimate Addons for Contact Form 7 < 3.1.29 - Admin+ Stored XSS

Medium 4.8 Published Updated

Admins can inject malicious scripts via unsanitized settings in Ultimate Addons for Contact Form 7, bypassing unfiltered_html restrictions in multisite setups.

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

What is CVE-2023-2802?

CVE-2023-2802 is a medium-severity cross-site scripting vulnerability in Unknown Ultimate Addons for Contact Form 7, published on 14 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

The Ultimate Addons for Contact Form 7 WordPress plugin before 3.1.29 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Which versions are affected by CVE-2023-2802?

It affects 1 product.

Products include Themefic Ultimate Addons for Contact Form 7.

How do I fix CVE-2023-2802?

No fix has been published for CVE-2023-2802 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-2023-2802 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2802 exists.

Sources

Also known as GHSA-hpq8-338w-xvc9.

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