CVE-2026-41402

MEDIUM 4.2

OpenClaw < 2026.3.31 - Webhook Replay Cache Cross-Target messageId Scope Bypass

CVSS Score

4.2

EPSS Score

0.0%

EPSS Percentile

0th

OpenClaw before 2026.3.31 contains a scope bypass vulnerability in webhook replay cache deduplication that allows authenticated attackers to replay messages across sibling targets using the same messageId. Attackers can exploit overly broad cache keying to bypass replay protection and deliver duplicate webhook messages to unintended targets.

CWE	CWE-706
Vendor	openclaw
Product	openclaw
Published	Apr 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

OpenClaw / OpenClaw

0 < 2026.3.31

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-hhq4-97c2-p447 github.com: https://github.com/openclaw/openclaw/commit/4d038bb242c11f39e45f6a4bde400e5fd42e4ebf vulncheck.com: https://www.vulncheck.com/advisories/openclaw-webhook-replay-cache-cross-target-messageid-scope-bypass

Credits

🔍 smaeljaish771 KeenSecurityLab