Home/CVE/OpenClaw before 2026.3.31 parses MS Teams webhook request bodies before performing JWT validation, allowing unauthentica
CVE

CVE-2026-41405

OpenClaw before 2026.3.31 parses MS Teams webhook request bodies before performing JWT validation, allowing unauthentica

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.

HIGH · CVSS 7.5 EPSS 0.00228
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-408Incorrect Behavior Order: Early Amplification
▤

Affected Products & Versions

1
openclaw< 2026.3.31
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
npm openclaw HIGH fixed in 2026.3.31
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · disclosure@vulncheck.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Apr 2026 · 07:37 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-p464-m8x6-vhv8Vendor Advisory
https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-ms-teams-webhook-body-parsingThird Party Advisory
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