CVE-2023-6000 Popup Builder < 4.2.3 - Unauthenticated Stored XSS

Medium 6.1 Published Updated

Unauthenticated attackers can inject JavaScript into popups, leading to stored XSS attacks in the Popup Builder WordPress plugin.

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-2023-6000?

CVE-2023-6000 is a medium-severity cross-site scripting vulnerability in Unknown Popup Builder, published on 1 Jan 2024. 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 Popup Builder WordPress plugin before 4.2.3 does not prevent simple visitors from updating existing popups, and injecting raw JavaScript in them, which could lead to Stored XSS attacks.

Weakness: CWE-79

Which versions are affected by CVE-2023-6000?

It affects 1 product.

Products include Sygnoos Popup Builder.

How do I fix CVE-2023-6000?

No fix has been published for CVE-2023-6000 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-2023-6000 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6000 exists.

Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.

Sources

Also known as GHSA-fhw3-qv5f-7vrw.

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