---
title: "CVE-2026-28446: OpenClaw has an inbound allowlist policy bypass in voice-call extension (empty caller ID + suffix matching)"
url: https://erroneo.us/security/cve/CVE-2026-28446/
description: "CVE-2026-28446 (openclaw (npm)): OpenClaw versions prior to 2026.2.1 with the voice-call extension installed and enabled contain an authentication bypass…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-03-05
date_modified: 2026-03-11
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-28446"
kev: false
cvss: 9.2
epss: 0.01024
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-28446: OpenClaw has an inbound allowlist policy bypass in voice-call extension (empty caller ID + suffix matching)

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.0% , percentile 63: FIRST’s model estimates a 1.0% chance of exploitation activity in the next 30 days, higher than 63% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes openclaw (npm) < 2026.2.2, fixed in 2026.2.2 . Check your lockfile, including transitive dependencies.

## What it is

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 packages

- npm `openclaw` < 2026.2.2 → fixed: 2026.2.2

## Affected products (CVE record)

- OpenClaw OpenClaw: < 2026.2.1

## Severity

- VulnCheck CVSS 4.0: 9.2 `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N`
- VulnCheck CVSS 3.1: 9.4 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L`
- GitHub CVSS 4.0: 9.2 `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.02% probability of exploitation activity in the next 30 days; percentile 63.

## Sources

- [GitHub Security Advisory (GHSA-4rj2-gpmh-qq5x)](https://github.com/openclaw/openclaw/security/advisories/GHSA-4rj2-gpmh-qq5x)
- [Patch Commit](https://github.com/openclaw/openclaw/commit/f8dfd034f5d9235c5485f492a9e4ccc114e97fdb)
- [GitHub Advisory GHSA-4rj2-gpmh-qq5x](https://github.com/advisories/GHSA-4rj2-gpmh-qq5x)
- [CVE.org record CVE-2026-28446](https://www.cve.org/CVERecord?id=CVE-2026-28446)
- [NVD entry CVE-2026-28446](https://nvd.nist.gov/vuln/detail/CVE-2026-28446)
- [VulnCheck Advisory: OpenClaw < 2026.2.1 - Inbound Allowlist Policy Bypass in voice-call Extension via Empty Caller ID and Suffix Matching](https://www.vulncheck.com/advisories/openclaw-inbound-allowlist-policy-bypass-in-voice-call-extension-via-empty-caller-id)
- [github.com](https://github.com/openclaw/openclaw/releases/tag/v2026.2.2)

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Source page: https://erroneo.us/security/cve/CVE-2026-28446/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt