CVE-2026-56692
NanoClaw < 2.1.17 - Arbitrary File Read via Symlink Following in forwardAttachedFiles
- State
- Published
- Severity
- 6.8 Medium
- Published
- Jun 23, 2026
- Updated
- Sep 17, 2026
- Reserved
- Jun 22, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.8 Medium | 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 | VulnCheck |
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-59 Improper Link Resolution Before File Access ('Link Following')
Affected Products
| Product | Versions |
|---|---|
nanoclawnanocoai |
|
References
- Pull Requestissue-trackingpatch
- Patch Commitpatch
- https://www.vulncheck.com/advisories/nanoclaw-arbitrary-file-read-via-symlink-following-in-forwardattachedfilesthird-party-advisory
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