Vulnerability in Openclaw
CVE-2026-28446
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.010 (60.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.010 · change: +0.003
Affected products
- Openclaw — versions 0
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-4rj2-gpmh-qq5x (Exploit, vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/f8dfd034f5d9235c5485f492a9e4ccc114e97fdb (Patch, patch)
- www.vulncheck.com/advisories/openclaw-inbound-allowlist-policy-bypass-in-voice-… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-28446?
- CVE-2026-28446 is a critical-severity vulnerability in Openclaw, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 9.4/10. Published 2026-03-05.
- How severe is CVE-2026-28446?
- Critical severity. CVSS v3 base score is 9.4 out of 10.