CVE-2023-2023 Custom 404 Pro < 3.7.3 - Reflected Cross-Site Scripting
Attackers can execute arbitrary scripts in victim browsers via unescaped URLs in the Custom 404 Pro 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-2023-2023?
CVE-2023-2023 is a medium-severity cross-site scripting vulnerability in Unknown Custom 404 Pro, published on 30 May 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 Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting.
Weakness: CWE-79
Which versions are affected by CVE-2023-2023?
It affects 1 product.
Products include Kunalnagar Custom 404 Pro.
How do I fix CVE-2023-2023?
No fix has been published for CVE-2023-2023 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-2023-2023 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2023 exists.
Public exploit code: 1 Nuclei template and 2 proofs of concept on GitHub.
Other vulnerabilities in Unknown Custom 404 Pro
- CVE-2023-2032 Custom 404 Pro < 3.8.1 - Multiple SQL Injection
- CVE-2022-47605 WordPress Custom 404 Pro Plugin <= 3.7.0 is vulnerable to SQL Injection (SQLi)
- CVE-2024-39646 WordPress Custom 404 Pro plugin <= 3.11.1 - Reflected Cross Site Scripting (XSS) vulnerability
- CVE-2023-51540 WordPress Custom 404 Pro Plugin <= 3.10.0 is vulnerable to Cross Site Scripting (XSS)
- CVE-2019-15838 Cross-site scripting in n/a
Sources
Also known as GHSA-2h88-qxq3-v97j.