What’s Vulnerable › Vulnerabilities

CVE-2026-56692: NanoClaw < 2.1.17 - Arbitrary File Read via Symlink Following in forwardAttachedFiles

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-23 · updated 2026-10-26
• Weakness: CWE-59

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.

Affected products

• nanocoai NanoClaw: before 2.1.17 — fixed in 2.1.17

How to fix

Upgrade to a fixed version: nanocoai NanoClaw 2.1.17. Check the vendor advisory for mitigations.

References

• https://github.com/nanocoai/nanoclaw/commit/28032bc0eca76c91fb3d8be0013e8bcaf2f5aeae
• https://github.com/nanocoai/nanoclaw/pull/2468
• https://www.vulncheck.com/advisories/nanoclaw-arbitrary-file-read-via-symlink-following-in-forwardattachedfiles

Get alerted when CVE-2026-56692 or the next vulnerability affects your stack