CVE-2026-34506

MEDIUM

OpenClaw < 2026.3.8 - Sender Allowlist Bypass in Microsoft Teams Plugin via Route Allowlist Configuration

Title source: cna
STIX 2.1

Description

OpenClaw before 2026.3.8 contains a sender allowlist bypass vulnerability in its Microsoft Teams plugin that allows unauthorized senders to bypass intended authorization checks. When a team/channel route allowlist is configured with an empty groupAllowFrom parameter, the message handler synthesizes wildcard sender authorization, permitting any sender in the matched team/channel to trigger replies in allowlisted Teams routes.

References (3)

Core 3
Core References
Third Party Advisory third-party-advisory
GitHub Security Advisory (GHSA-g7cr-9h7q-4qxq)
https://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxq
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.3.8 - Sender Allowlist Bypass in Microsoft Teams Plugin via Route Allowlist Configuration
https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration

Scores

CVSS v3 4.3
EPSS 0.0027
EPSS Percentile 18.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-863
Status published
Products (4)
npm/openclaw 0 - 2026.3.8npm
OpenClaw/OpenClaw < 2026.3.8
openclaw/openclaw < 2026.3.8
OpenClaw/OpenClaw 2026.3.8
Published Mar 31, 2026
Tracked Since Mar 31, 2026