CVE-2026-100534

2.3 lowEPSS 0.3%

Low (2.3). EPSS 0.3% chance of exploitation in the next 30 days.

OpenClaw versions before 2026.8.1 contain an authorization bypass vulnerability in webhook TaskFlow cancellation that allows attackers to cancel unrelated sessions. An attacker with a webhook route secret can supply an arbitrary child session key to cancel ACP or subagent work outside the route's configured authority.

Severity

CVSS 4.0

2.3 low

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

CVSS 3.1

3.1 low

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)
CWE: CWE-639
Published: 2026-09-26
Modified: 2026-09-28
Record from: the NVD, synced 2026-10-19

References

https://github.com/openclaw/openclaw/security/advisories/GHSA-g24w-m94m-59qc
https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-session-cancellation-authorization-bypass

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