PT-2026-35788 · Openclaw · Openclaw

Antaisecuritylab · Published 2026-04-03 · Updated 2026-04-30 · CVE-2026-41405

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenClaw versions prior to 2026.3.31

Description OpenClaw parses MS Teams webhook request bodies before performing JSON Web Token (JWT) validation—a process used to verify the identity of the sender. This allows unauthenticated remote attackers to send malicious Teams webhook payloads to trigger resource exhaustion, which occurs when a system's available resources are consumed, potentially leading to a denial of service.

Recommendations Update to version 2026.3.31.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-408

CWE-400

Related Identifiers

CVE-2026-41405

GHSA-P464-M8X6-VHV8

Affected Products

Openclaw

References · 10

• https://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623 · Patch
• https://github.com/openclaw/openclaw/security/advisories/GHSA-p464-m8x6-vhv8 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-p464-m8x6-vhv8 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41405 · Security Note
• https://github.com/openclaw/openclaw · Note
• https://github.com/openclaw/openclaw/releases/tag/v2026.3.31 · Note
• https://vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-ms-teams-webhook-body-parsing · Note
• https://twitter.com/VulmonFeeds/status/2049319377414115410 · Twitter Post
• https://twitter.com/CVEnew/status/2049227515688849457 · Twitter Post
• https://t.me/cveNotify/161622 · Telegram Post