CVE-2026-56692

Arbitrary host file read via symlink following

Published Jun 23, 2026 · Updated Jun 23, 2026

Symlink following in NanoClaw before 2.1.17 allows container-controlled agents to read arbitrary host-readable files through attachments. forwardAttachedFiles accepts a safe-looking basename and passes its path to fs.copyFileSync without checking the filesystem object or containment, so the host follows a symlink. Exploitation requires control of an agent outbox; disclosure is limited to files readable by the host process.

CVSS severity6.8
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Symlink following in NanoClaw before 2.1.17 allows container-controlled agents to read arbitrary host-readable files through attachments. forwardAttachedFiles accepts a safe-looking basename and passes its path to fs.copyFileSync without checking the filesystem object or containment, so the host follows a symlink. Exploitation requires control of an agent outbox; disclosure is limited to files readable by the host process.

The record

CVE
CVE-2026-56692
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
NanoCo
Product
NanoClaw
Classifications
CWE-59, T1005
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.1.17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

NanoCo · NanoClawversion=0 <2.1.17

Published CVSS scores

5.5VulnCheck CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.8VulnCheck CNACVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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