CVE-2023-40667 WordPress Simple URLs Plugin <= 117 is vulnerable to Cross Site Scripting (XSS)

Q: What is CVE-2023-40667?

CVE-2023-40667 is a high-severity cross-site scripting vulnerability in Lasso Simple URLs, published on 27 Sep 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-2023-40667 being exploited?

There is no known exploitation of CVE-2023-40667 in the wild and no public exploit code.

Q: How do I fix CVE-2023-40667?

No fix has been published for CVE-2023-40667 yet. Limit exposure of the affected software until one is available.

High 7.1 Published 27 Sep 2023 Updated 28 Apr 2026

Unauthenticated attackers can execute arbitrary scripts in the context of other users via reflected XSS in the Simple URLs 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-2023-40667?

CVE-2023-40667 is a high-severity cross-site scripting vulnerability in Lasso Simple URLs, published on 27 Sep 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

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Lasso Simple URLs plugin <= 117 versions.

Weakness: CWE-79

Which versions are affected by CVE-2023-40667?

It affects 1 product.

Products include Getlasso Simple Urls.

How do I fix CVE-2023-40667?

No fix has been published for CVE-2023-40667 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-2023-40667 being exploited?

There is no known exploitation of CVE-2023-40667 in the wild and no public exploit code.

Sources

Also known as GHSA-3w9c-7hfp-qxrc.