CVE-2026-56692

Medium

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.

SeverityMedium

CVSS5.5

Exploit probability—

ProductNanocoai Nanoclaw

PublishedJun 23, 2026

First seenJun 23, 2026

Weakness typeCWE-59Improper link resolution

How to fix

Update

nanocoai nanoclaw2.1.17 or later

Patches

github.com/nanocoai/nanoclaw/pull/2468
github.com/nanocoai/nanoclaw/commit/28032bc0eca76c91fb3d8be0013e8bcaf2f5aeae

Affected products

Product	Affected versions	Fixed in
nanocoai nanoclaw	v < 2.1.17	2.1.17

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