CVE-2026-18991

A security vulnerability has been detected in nanocoai NanoClaw up to 2.0.64. This affects an unknown part of the file container/agent-runner/src/mcp-tools/core.ts of the component send_file. Such manipulation leads to path traversal. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0

5.5CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS

0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-25)

CWE

CWE-22

Published

2026-08-06

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

References

• https://github.com/nanocoai/nanoclaw/
• https://github.com/nanocoai/nanoclaw/issues/2760
• https://vuldb.com/cve/CVE-2026-18991
• https://vuldb.com/submit/862563
• https://vuldb.com/vuln/386367

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