CVE-2026-16077 AstrBotDevs AstrBot Filesystem Computer-Use Tool fs.py _normalize_rw_path link following
Local attackers can exploit link following in the filesystem tool to read or modify arbitrary files, requiring local access and permissions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16077?
CVE-2026-16077 is a medium-severity path traversal vulnerability in AstrBotDevs AstrBot, published on 18 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in AstrBotDevs AstrBot up to 4.25.5. Impacted is the function _normalize_rw_path of the file astrbot/core/tools/computer_tools/fs.py of the component Filesystem Computer-Use Tool. Performing a manipulation results in link following. The attack is only possible with local access. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-59
Which versions are affected by CVE-2026-16077?
How do I fix CVE-2026-16077?
No fix has been published for CVE-2026-16077 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-2026-16077 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16077 exists.
Sources
Also known as GHSA-78hj-h3pf-359h.