CVE-2026-56692 · Symaro Security Advisory

Description

NanoClaw before 2.1.17 contains a symlink following vulnerability in forwardAttachedFiles that allows container-controlled agents to exfiltrate host-readable files. The host validates attachment filenames using only isSafeAttachmentName before copying with fs.copyFileSync, which follows symlinks without containment checks, allowing malicious agents to disclose arbitrary host files.

Severity (CVSS)

Base score	6.8
Severity	Medium
Version	CVSS 4.0
Vector	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Provided by	CNA

Weaknesses

CWE-59 — Improper Link Resolution Before File Access ('Link Following')

Affected products

Vendor	Product	Versions
nanocoai	nanoclaw	0 to <2.1.17; 2.1.17

References

https://github.com/nanocoai/nanoclaw/pull/2468 (issue-tracking)
https://github.com/nanocoai/nanoclaw/commit/28032bc0eca76c91fb3d8be0013e8bcaf2f5aeae (patch)
https://www.vulncheck.com/advisories/nanoclaw-arbitrary-file-read-via-symlink-following-in-forwardattachedfiles (third-party-advisory)

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 24 Jun 2026 09:35 UTC.