CVE-2026-100538: Openclaw

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Openclaw Openclaw: before 2026.8.1 (fixed in 2026.8.1)

Published 2026-09-26. Last modified 2026-09-28.