CVE-2021-36703 Cross-site scripting in n/a

Medium 6.1 Published 3 Aug 2021 Updated 4 Aug 2024

Authenticated attackers can inject arbitrary scripts via the blog title field in htmly, potentially leading to session hijacking or code execution.

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-2021-36703?

CVE-2021-36703 is a medium-severity cross-site scripting vulnerability in n/a, published on 3 Aug 2021. 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 "blog title" field in the "Settings" menu "config" page of "dashboard" in htmly 2.8.1 has a storage cross site scripting (XSS) vulnerability. It allows remote attackers to send an authenticated post HTTP request to admin/config and inject arbitrary web script or HTML through a special website name.

Weakness: CWE-79

Which versions are affected by CVE-2021-36703?

It affects 1 product.

Products include Htmly Htmly.

How do I fix CVE-2021-36703?

No fix has been published for CVE-2021-36703 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-2021-36703 being exploited?

There is no known exploitation of CVE-2021-36703 in the wild and no public exploit code.

Sources

Also known as GHSA-gw5q-fp2q-7f5r.