Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-p464-m8x6-vhv8
Advisory ID github_osv/GHSA-p464-m8x6-vhv8
Aliases CVE-2026-41405
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 7.8
Risk 3.9
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-400 Uncontrolled Resource Consumption
CWE-408 Incorrect Behavior Order: Early Amplification
System Score Found at
cvssv3.1 7.5 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p464-m8x6-vhv8/GHSA-p464-m8x6-vhv8.json
cvssv4 8.7 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p464-m8x6-vhv8/GHSA-p464-m8x6-vhv8.json
generic_textual HIGH
Reference id Reference type URL
https://github.com/openclaw/openclaw
https://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623
https://github.com/openclaw/openclaw/releases/tag/v2026.3.31
https://github.com/openclaw/openclaw/security/advisories/GHSA-p464-m8x6-vhv8
https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-ms-teams-webhook-body-parsing
CVE-2026-41405 https://nvd.nist.gov/vuln/detail/CVE-2026-41405
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p464-m8x6-vhv8/GHSA-p464-m8x6-vhv8.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: 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 Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p464-m8x6-vhv8/GHSA-p464-m8x6-vhv8.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.