CVE-2023-1373 W4 Post List < 2.4.6 - Reflected XSS

Q: What is CVE-2023-1373?

CVE-2023-1373 is a medium-severity cross-site scripting vulnerability in Unknown W4 Post List, published on 17 Apr 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Q: Is CVE-2023-1373 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1373 exists.

Q: How do I fix CVE-2023-1373?

No fix has been published for CVE-2023-1373 yet. Limit exposure of the affected software until one is available.

Medium 6.1 Published 17 Apr 2023 Updated 6 Feb 2025

Attackers can execute arbitrary scripts in victim browsers via unescaped URLs in the W4 Post List 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-2023-1373?

CVE-2023-1373 is a medium-severity cross-site scripting vulnerability in Unknown W4 Post List, published on 17 Apr 2023. 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 W4 Post List WordPress plugin before 2.4.6 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting

Which versions are affected by CVE-2023-1373?

It affects 1 product.

Products include W4 Post List Project W4 Post List.

How do I fix CVE-2023-1373?

No fix has been published for CVE-2023-1373 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-2023-1373 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1373 exists.

Sources

Also known as GHSA-hgqw-hh57-7q9g.