Vulnerability in Nanocoai Nanoclaw
CVE-2026-90807
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (36.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Nanocoai Nanoclaw — versions 2.1.0, 2.1.1, 2.1.10
Weakness classification (CWE)
References
- vuldb.com/vuln/403309 (technical-description, vdb-entry)
- vuldb.com/vuln/403309/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-90807 (third-party-advisory)
- vuldb.com/submit/922841 (third-party-advisory)
- github.com/nanocoai/nanoclaw/issues/2828 (issue-tracking, exploit)
- github.com/nanocoai/nanoclaw/commit/3f9ed607b7e7a4872747295f75286f1c377d7c33 (patch)
- github.com/nanocoai/nanoclaw/ (product)
Frequently asked questions
- What is CVE-2026-90807?
- CVE-2026-90807 is a medium-severity vulnerability in Nanocoai Nanoclaw, classified under Improper Link Resolution Before File Access. CVSS score: 6.3/10. Published 2026-09-14.
- How severe is CVE-2026-90807?
- Medium severity. CVSS v3 base score is 6.3 out of 10.