CVE-2026-15621 mosaxiv clawlet File Tools fs_ops.go edit_file link following
Local attackers can exploit link following in file operations to read or modify arbitrary files, affecting users of the mosaxiv clawlet library.
- 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-2026-15621?
CVE-2026-15621 is a medium-severity path traversal vulnerability in mosaxiv clawlet, published on 14 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 detected in mosaxiv clawlet up to 0.2.10. This impacts the function read_file/write_file/edit_file of the file tools/fs_ops.go of the component File Tools. Performing a manipulation results in link following. The attack needs to be approached locally. The reported GitHub issue was closed with the label "not planned".
Weakness: CWE-59
Which versions are affected by CVE-2026-15621?
How do I fix CVE-2026-15621?
No fix has been published for CVE-2026-15621 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-2026-15621 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15621 exists.
Sources
Also known as GHSA-9hg3-m3p7-mjm6.