# CVE-2026-41405

## Summary

- **CVE ID:** CVE-2026-41405
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-408
- **Published:** Apr 28, 2026
- **Last Modified:** Apr 29, 2026

## 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.

## Affected Products

- OpenClaw — OpenClaw (0)
- OpenClaw — OpenClaw (2026.3.31)

## References

- [CNA](https://github.com/openclaw/openclaw/security/advisories/GHSA-p464-m8x6-vhv8)
- [CNA](https://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623)
- [CNA](https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-ms-teams-webhook-body-parsing)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.48%
- **EPSS Percentile:** 40.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._