CVE-2023-37978 WordPress HTTP Headers Plugin <= 1.18.11 is vulnerable to Server Side Request Forgery (SSRF)

Q: What is CVE-2023-37978?

CVE-2023-37978 is a medium-severity server-side request forgery vulnerability in Dimitar Ivanov HTTP Headers, published on 13 Nov 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Q: Is CVE-2023-37978 being exploited?

There is no known exploitation of CVE-2023-37978 in the wild and no public exploit code.

Q: How do I fix CVE-2023-37978?

No fix has been published for CVE-2023-37978 yet. Limit exposure of the affected software until one is available.

Medium 4.4 Published 13 Nov 2023 Updated 28 Apr 2026

Attackers can exploit SSRF in the HTTP Headers WordPress plugin to access internal resources or bypass security controls.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-37978?

CVE-2023-37978 is a medium-severity server-side request forgery vulnerability in Dimitar Ivanov HTTP Headers, published on 13 Nov 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Server-Side Request Forgery (SSRF) vulnerability in Dimitar Ivanov HTTP Headers.This issue affects HTTP Headers: from n/a through 1.18.11.

Weakness: CWE-918

Which versions are affected by CVE-2023-37978?

It affects 1 product.

Products include Riverside Http Headers.

How do I fix CVE-2023-37978?

No fix has been published for CVE-2023-37978 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2023-37978 being exploited?

There is no known exploitation of CVE-2023-37978 in the wild and no public exploit code.

Sources

Also known as GHSA-4xhm-q9h6-mq38.