CVE-2023-37874 WordPress HTTP Headers Plugin <= 1.18.11 is vulnerable to Cross Site Scripting (XSS)

Q: What is CVE-2023-37874?

CVE-2023-37874 is a medium-severity cross-site scripting vulnerability in Dimitar Ivanov HTTP Headers, published on 5 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Q: Is CVE-2023-37874 being exploited?

There is no known exploitation of CVE-2023-37874 in the wild and no public exploit code.

Q: How do I fix CVE-2023-37874?

No fix has been published for CVE-2023-37874 yet. Limit exposure of the affected software until one is available.

Medium 5.9 Published 5 Aug 2023 Updated 28 Apr 2026

An authenticated admin can inject malicious scripts via the HTTP Headers plugin, potentially compromising user sessions or site integrity.

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-2023-37874?

CVE-2023-37874 is a medium-severity cross-site scripting vulnerability in Dimitar Ivanov HTTP Headers, published on 5 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Dimitar Ivanov HTTP Headers plugin <= 1.18.11 versions.

Weakness: CWE-79

Which versions are affected by CVE-2023-37874?

It affects 1 product.

Products include Riverside Http Headers.

How do I fix CVE-2023-37874?

No fix has been published for CVE-2023-37874 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-2023-37874 being exploited?

There is no known exploitation of CVE-2023-37874 in the wild and no public exploit code.

Sources

Also known as GHSA-c52j-j2cg-8r59.