HOMEVULNERABILITIESCVE-2026-34506
MEDIUM

CVE-2026-34506

CWE-863Published: March 31, 2026· Updated: Apr 1, 2026

4.3
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:6.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34506 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

openclaw1 product
openclaw
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2
ADVISORYhttps://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxq
ADVISORYhttps://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration

All References (3)

→
https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2Patch
→
https://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxqVendor Advisory
→
https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configurationThird Party Advisory

Quick Facts

CVE IDCVE-2026-34506
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-863
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedMar 31, 2026

Related CVEs (CWE-863)

CVE-2026-44330
10.0
CVE-2026-48303
10.0
CVE-2026-48286
10.0
CVE-2026-27112
9.9
CVE-2026-43948
9.9
CVE-2026-41050
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-34506 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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