Vulnerability · Published Sep 14, 2026 · Assigned by VulDB
CVE-2026-90807nanocoai NanoClaw Attachment agent-route.ts forwardAttachedFiles link following
Medium 6.3
In plain English
A medium-severity security flaw in NanoClaw from nanocoai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).
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.
Affected products (as reported)
Weakness: CWE-59 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
References
- VDB-403309 | nanocoai NanoClaw Attachment agent-route.ts forwardAttachedFiles link following vdb-entry, technical-description
- VDB-403309 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-90807 | CVE Analysis and Report third-party-advisory
- Submit #922841 | nanocoai nanoclaw <= 2.1.17 Improper Link Resolution Before File Access / Link Following (CWE-59) third-party-advisory
- https://github.com/nanocoai/nanoclaw/issues/2828 exploit, issue-tracking
- https://github.com/nanocoai/nanoclaw/commit/3f9ed607b7e7a4872747295f75286f1c377d7c33 patch
- https://github.com/nanocoai/nanoclaw/ product