CVE-2026-28446Public exploitNetwork attack vector

Unauthenticated agent access via caller-ID matching

Published Mar 5, 2026 · Updated Mar 5, 2026

Authentication bypass in OpenClaw 2026.2.1 and earlier allows remote attackers to reach the voice-call agent and execute tools. The inbound allowlist in extensions/voice-call/src/manager.ts normalizes absent caller IDs to an empty string and accepts suffix matches instead of exact normalized-number equality. Exploitation requires the optional extension to be enabled with allowlist or pairing policy; successful calls gain the agent's configured tool access.

CVSS severity9.4
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in OpenClaw 2026.2.1 and earlier allows remote attackers to reach the voice-call agent and execute tools. The inbound allowlist in extensions/voice-call/src/manager.ts normalizes absent caller IDs to an empty string and accepts suffix matches instead of exact normalized-number equality. Exploitation requires the optional extension to be enabled with allowlist or pairing policy; successful calls gain the agent's configured tool access.

The record

CVE
CVE-2026-28446
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-287, CWE-303, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.2.1

Published CVSS scores

9.4GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
9.2VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-303Incorrect Implementation of Authentication Algorithm
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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