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Advisory details: gitlab / npm/openclaw/CVE-2026-34506
Advisory ID gitlab/npm/openclaw/CVE-2026-34506
Aliases CVE-2026-34506
GHSA-g7cr-9h7q-4qxq
Summary OpenClaw's MS Teams sender allowlist bypass when route allowlist is configured and sender allowlist is empty OpenClaw's Microsoft Teams plugin widened group sender authorization when a team/channel route allowlist was configured but `groupAllowFrom` was empty. Before the fix, a matching route allowlist entry could cause the message handler to synthesize wildcard sender authorization for that route, allowing any sender in the matched team/channel to bypass the intended `groupPolicy: "allowlist"` sender check. This does not affect default unauthenticated access, but it does weaken a documented Teams group authorization boundary and can allow unauthorized group senders to trigger replies in allowlisted Teams routes.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (3)
CWE-289 Authentication Bypass by Alternate Name
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/openclaw/CVE-2026-34506.yml
Reference id Reference type URL
https://github.com/openclaw/openclaw
88aee9161e0e6d32e810a25711e32a808a1777b2 Other https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2
CVE-2026-34506 https://nvd.nist.gov/vuln/detail/CVE-2026-34506
GHSA-g7cr-9h7q-4qxq https://github.com/advisories/GHSA-g7cr-9h7q-4qxq
GHSA-g7cr-9h7q-4qxq Advisory https://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxq
openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration Advisory https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration
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:L/UI:N/S:U/C:L/I:N/A:N Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/openclaw/CVE-2026-34506.yml
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-31T14:56:56Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/34xxx/CVE-2026-34506.json

Source Advisory: vulnrichment/CVE-2026-34506

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]