OpenClaw: MS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion
Summary
MS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion
Current Maintainer Triage
- Status: open
- Normalized severity: medium
- Assessment: v2026.3.28 still parses Teams JSON after only a Bearer-prefix gate and before real JWT validation, and the auth-before-parse fix is not yet shipped.
Affected Packages / Versions
- Package:
openclaw(npm) - Latest published npm version:
2026.3.31 - Vulnerable version range:
<=2026.3.28 - Patched versions:
>= 2026.3.31 - First stable tag containing the fix:
v2026.3.31
Fix Commit(s)
3834d47099dd13c8244ed6de8b9ea9855c553623— 2026-03-30T13:46:40+01:00
OpenClaw thanks @AntAISecurityLab for reporting.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | openclaw | < 2026.3.31 | 2026.3.31 |
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-p464-m8x6-vhv8
- https://nvd.nist.gov/vuln/detail/CVE-2026-41405
- https://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623
- https://github.com/openclaw/openclaw
- https://github.com/openclaw/openclaw/releases/tag/v2026.3.31
- https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-ms-teams-webhook-body-parsing
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-400, CWE-408- Platform
- npm
- Package
openclaw- Disclosed
- 03.04.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-p464-m8x6-vhv8 - CC BY 4.0
Vulnerability history: openclaw
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 588
- First → latest
- 02.2026 07.2026
- Without a fix
- 9
- Exploited in attacks
- 0
Severity breakdown
- Critical 20
- High 215
- Medium 299
- Low 54
Disclosures per year
- 2026: 588
-
OpenClaw: MS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion this entry
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