CVE-2026-41405

HIGH

7.5

Description

OpenClaw before 2026.3.31 parses MS Teams webhook request bodies before performing JWT validation, allowing unauthenticated attackers to trigger resource exhaustion. Remote attackers can send malicious Teams webhook payloads to exhaust server resources by bypassing authentication checks.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/28/2026

Last Modified4/30/2026

Sourcenvd

Honeypot Sightings0

Affected Products

openclaw:openclaw

Weaknesses (CWE)

CWE-408

References

https://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623(disclosure@vulncheck.com)

https://github.com/openclaw/openclaw/security/advisories/GHSA-p464-m8x6-vhv8(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-ms-teams-webhook-body-parsing(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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