CVE-2026-19008 mf-yang openclaw-cn apply_patch Tool sandbox-paths.ts assertNoSymlinkEscape link following

Medium 5.3 Published Updated

Attackers can bypass symlink checks in the apply_patch tool to read or modify files outside the intended sandbox directory.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-19008?

CVE-2026-19008 is a medium-severity path traversal vulnerability in mf-yang openclaw-cn, published on 6 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was identified in mf-yang openclaw-cn up to 0.2.1. This issue affects the function assertNoSymlinkEscape of the file src/agents/sandbox-paths.ts of the component apply_patch Tool. Such manipulation leads to link following. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-59

Which versions are affected by CVE-2026-19008?

How do I fix CVE-2026-19008?

No fix has been published for CVE-2026-19008 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-2026-19008 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19008 exists.

Sources

Also known as GHSA-2mj8-f2gc-5q5j.

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