CVE-2021-42637 Server-side request forgery in n/a

Critical 9.8 Published 2 Feb 2022 Updated 9 Jul 2026

Attacker can exploit SSRF in PrinterLogic Web Stack to access internal resources or bypass security controls.

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

What is CVE-2021-42637?

CVE-2021-42637 is a critical server-side request forgery vulnerability in n/a, published on 2 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

PrinterLogic Web Stack versions 19.1.1.13 SP9 and below use user-controlled input to craft a URL, resulting in a Server Side Request Forgery (SSRF) vulnerability.

Weakness: CWE-918

Which versions are affected by CVE-2021-42637?

It affects 1 product.

Products include Printerlogic Web Stack.

How do I fix CVE-2021-42637?

No fix has been published for CVE-2021-42637 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-2021-42637 being exploited?

There is no known exploitation of CVE-2021-42637 in the wild and no public exploit code.

Sources

Also known as GHSA-gq5h-jhm6-q233.