CVE-2026-85453 MOOS core-moos through 10.4.0 MOOSDB HTTP Pages Stored Cross-Site Scripting

Medium 5.3 Published 3 Sep 2026 Updated 14 Sep 2026

Attackers can inject malicious scripts into MOOSDB HTTP pages via variable values, executing code in operators' browsers.

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-2026-85453?

CVE-2026-85453 is a medium-severity cross-site scripting vulnerability in themoos core-moos, published on 3 Sep 2026. 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

MOOS core-moos through 10.4.0 fails to escape database contents when rendering MOOSDB HTTP pages, allowing attackers to inject malicious scripts. Any MOOS publisher can set variable values containing script payloads that execute in the browser of operators viewing the web interface.

Weakness: CWE-79

Which versions are affected by CVE-2026-85453?

It affects 1 product.

Products include Themoos Core-Moos.

How do I fix CVE-2026-85453?

No fix has been published for CVE-2026-85453 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-2026-85453 being exploited?

There is no known exploitation of CVE-2026-85453 in the wild and no public exploit code.

Sources

Also known as GHSA-82xr-q34f-wp45.