CVE-2019-16890 Cross-site scripting in n/a

Medium 5.4 Published 25 Sep 2019 Updated 5 Aug 2024

An attacker can execute arbitrary scripts in the Halo blog platform by submitting a malicious author URL in a comment, potentially compromising user sessions.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-16890?

CVE-2019-16890 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Sep 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Halo 1.1.0 has XSS via a crafted authorUrl in JSON data to api/content/posts/comments.

Weakness: CWE-79

Which versions are affected by CVE-2019-16890?

It affects 1 product.

Products include Halo Halo.

How do I fix CVE-2019-16890?

No fix has been published for CVE-2019-16890 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-2019-16890 being exploited?

There is no known exploitation of CVE-2019-16890 in the wild and no public exploit code.

Sources

Also known as GHSA-h2mg-9h92-64h6.