CVE-2026-90807 nanocoai NanoClaw Attachment agent-route.ts forwardAttachedFiles link following
Remote attackers can exploit link following in the attachment handler to read or modify files, requiring a patch for NanoClaw.
- 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-2026-90807?
CVE-2026-90807 is a medium-severity path traversal vulnerability in nanocoai NanoClaw, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in nanocoai NanoClaw up to 2.1.17. This issue affects the function forwardAttachedFiles of the file src/modules/agent-to-agent/agent-route.ts of the component Attachment Handler. The manipulation results in link following. The attack may be performed from remote. The exploit has been made public and could be used. The patch is identified as 3f9ed607b7e7a4872747295f75286f1c377d7c33. It is advisable to implement a patch to correct this issue.
Weakness: CWE-59
Which versions are affected by CVE-2026-90807?
How do I fix CVE-2026-90807?
No fix has been published for CVE-2026-90807 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-2026-90807 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90807 exists.
Sources
Also known as GHSA-6pc7-x5hm-c6fj.