CVE-2026-34506

LOW EPSS 18.3%
Published Mar 31, 20263mo ago · Modified Jun 17, 20261w ago
2.3 CVSS 4.0
Low
Find Similar
Published Mar 31, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
2.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
18.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

Affected Products 1

VendorProductVersionRange
openclawopenclaw* <2026.3.8

References 3

  • github.com https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2
    Patch
  • github.com https://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxq
    Vendor Advisory
  • vulncheck.com https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration
    Third Party Advisory

Remediation

  • github.com https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2
    Patch