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.

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.

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.

Affected products

Nanocoai Nanoclaw — versions 2.1.0, 2.1.1, 2.1.10

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking, exploit)
cna@vuldb.com (patch)
cna@vuldb.com (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.