CVE-2026-85456 MOOS-IvP through 24.8.1 alog Splitting Path Traversal on Windows

Medium 6.8 Published 3 Sep 2026 Updated 4 Sep 2026

Attackers can write files outside the intended directory on Windows systems by supplying crafted alog files with backslash sequences in variable names.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-85456?

CVE-2026-85456 is a medium-severity path traversal vulnerability in moos-ivp, published on 3 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

MOOS-IvP through 24.8.1 fails to properly validate variable names extracted from alog files in the SplitHandler, allowing attackers to write files outside the split directory. Attackers can supply crafted alog files with backslash sequences in variable names to escape the output directory and append to arbitrary files on Windows systems.

Weakness: CWE-22

Which versions are affected by CVE-2026-85456?

It affects 1 product.

Products include Mit Moos-Ivp.

How do I fix CVE-2026-85456?

No fix has been published for CVE-2026-85456 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-85456 being exploited?

There is no known exploitation of CVE-2026-85456 in the wild and no public exploit code.

Sources

Also known as GHSA-gjch-88vq-7gqr.