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Description

OpenClaw before 2026.5.18 contains an insufficient provenance validation vulnerability in node event handling that allows paired nodes to forge exec lifecycle events without system.run authorization. A malicious or compromised paired node can send crafted node.event messages to the gateway, steering target sessions into exec-event paths that expose capabilities the reduced node surface should not provide.

PUBLISHED Reserved 2026-06-10 | Published 2026-06-11 | Updated 2026-06-11 | Assigner VulnCheck




HIGH: 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Problem types

Missing Authorization

Product status

Default status
unaffected

Any version before 2026.5.18
affected

2026.5.18 (semver)
unaffected

Credits

cantinagen reporter

Ellahi (@Ellahinator) finder

References

github.com/...enclaw/security/advisories/GHSA-3c6j-hq33-3jv4 (GitHub Security Advisory (GHSA-3c6j-hq33-3jv4)) vendor-advisory patch

www.vulncheck.com/...lifecycle-event-forgery-via-paired-node third-party-advisory

cve.org (CVE-2026-53816)

nvd.nist.gov (CVE-2026-53816)

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