CVE-2026-28446

CRITICAL 9.4

OpenClaw < 2026.2.1 - Inbound Allowlist Policy Bypass in voice-call Extension via Empty Caller ID and Suffix Matching

CVSS Score

9.4

EPSS Score

0.0%

EPSS Percentile

0th

OpenClaw versions prior to 2026.2.1 with the voice-call extension installed and enabled contain an authentication bypass vulnerability in inbound allowlist policy validation that accepts empty caller IDs and uses suffix-based matching instead of strict equality. Remote attackers can bypass inbound access controls by placing calls with missing caller IDs or numbers ending with allowlisted digits to reach the voice-call agent and execute tools.

Vendor	openclaw
Product	openclaw
Published	Mar 5, 2026
Last Updated	Mar 11, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

Low

Affected Versions

OpenClaw / OpenClaw

0 < 2026.2.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-4rj2-gpmh-qq5x github.com: https://github.com/openclaw/openclaw/commit/f8dfd034f5d9235c5485f492a9e4ccc114e97fdb vulncheck.com: https://www.vulncheck.com/advisories/openclaw-inbound-allowlist-policy-bypass-in-voice-call-extension-via-empty-caller-id

Credits

🔍 Petr Simecek (@simecek) 🔍 @MegaManSec (https://joshua.hu) of AISLE Research Team Stanislav Fort, Aisle Research, www.aisle.com