What’s Vulnerable › Vulnerabilities

CVE-2026-28446: OpenClaw < 2026.2.1 - Inbound Allowlist Policy Bypass in voice-call Extension via Empty Caller ID and Suffix Matching

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-05 · updated 2026-06-17
• Weakness: CWE-303

Description

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.

Affected products

• OpenClaw: before 2026.2.2 — fixed in 2026.2.2

How to fix

Upgrade to a fixed version: OpenClaw 2026.2.2. Check the vendor advisory for mitigations.

References

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

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