Vulnerability Description
OpenClaw (npm package 'openclaw') before 2026.8.1 does not apply the originating sender's global or per-agent toolsBySender policy when handling outbound attachments. A sender that has been explicitly denied filesystem read tools can still cause a known local file to be read and returned via a final-response media directive or a message attachment, disclosing local file contents to an admitted requester whose agent turn did not include the read tool. Exploitation requires knowledge or derivation of a useful host path and a delivery flow that accepts local attachments. The issue is fixed in version 2026.8.1.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-w5x7-c87m-3jpc
- https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-local-file-read-vi
FAQ
What is CVE-2026-100538?
CVE-2026-100538 is a vulnerability with a CVSS score of 6.5 (MEDIUM). OpenClaw (npm package 'openclaw') before 2026.8.1 does not apply the originating sender's global or per-agent toolsBySender policy when handling outbound attachments. A sender that has been explicitly...
How severe is CVE-2026-100538?
CVE-2026-100538 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-100538?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.