CVE-2026-28446
published 2026-03-05CVE-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…
PriorityP269critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.65%
46.6th percentile
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
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| openclaw | openclaw | < 2026.2.1 | 2026.2.1 |
| openclaw | openclaw | < 2026.2.2 | 2026.2.2 |
| openclaw | openclaw | >= 0 < 2026.2.2 | 2026.2.2 |
Detection & IOCsextracted from sources · hover to see the quote
- →Detect inbound voice calls with empty/missing caller IDs targeting the OpenClaw voice-call extension, which the vulnerability accepts due to improper allowlist validation ↗
- →Detect inbound voice calls where the caller ID number ends with (suffix-matches) an allowlisted digit string but is not an exact match — indicative of bypass attempts against OpenClaw inbound allowlist policy ↗
- ·Vulnerability only applies when the voice-call extension is both installed AND enabled; instances without this extension are not affected ↗
- ·The allowlist policy uses suffix-based matching rather than strict equality, meaning any caller ID ending with an allowlisted digit sequence will pass validation — operators should audit allowlist entries for short/common suffixes that could be easily spoofed ↗
- ·The fix is available in OpenClaw version 2026.2.1 and later; npm fix added 2026-03-08, Homebrew fix added 2026-03-12 ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv4.09.2CRITICALCVSS: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
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OSV
OpenClaw has an inbound allowlist policy bypass in voice-call extension (empty caller ID + suffix matching)
osv·2026-02-17
CVE-2026-28446 [CRITICAL] OpenClaw has an inbound allowlist policy bypass in voice-call extension (empty caller ID + suffix matching)
OpenClaw has an inbound allowlist policy bypass in voice-call extension (empty caller ID + suffix matching)
### Summary
An authentication bypass in the optional `voice-call` extension/plugin allowed unapproved or anonymous callers to reach the voice-call agent when inbound policy was set to `allowlist` or `pairing`.
Deployments that do not install/enable the `voice-call` extension are not affected.
### Affected Packages / Versions
- `openclaw` (npm): `= 2026.2.2`
### Details
In affected versions (for example `2026.2.1`), the inbound allowlist check in `extensions/voice-call/src/manager.ts` used suffix-based matching and accepted empty caller IDs after normalization.
This allowed two bypasses:
1. Missing/empty `from` values normalized to an empty string, which caused the allowlist
GHSA
OpenClaw has an inbound allowlist policy bypass in voice-call extension (empty caller ID + suffix matching)
ghsa·2026-02-17
CVE-2026-28446 [CRITICAL] CWE-287 OpenClaw has an inbound allowlist policy bypass in voice-call extension (empty caller ID + suffix matching)
OpenClaw has an inbound allowlist policy bypass in voice-call extension (empty caller ID + suffix matching)
### Summary
An authentication bypass in the optional `voice-call` extension/plugin allowed unapproved or anonymous callers to reach the voice-call agent when inbound policy was set to `allowlist` or `pairing`.
Deployments that do not install/enable the `voice-call` extension are not affected.
### Affected Packages / Versions
- `openclaw` (npm): `= 2026.2.2`
### Details
In affected versions (for example `2026.2.1`), the inbound allowlist check in `extensions/voice-call/src/manager.ts` used suffix-based matching and accepted empty caller IDs after normalization.
This allowed two bypasses:
1. Missing/empty `from` values normalized to an empty string, which caused the allowlist
No detection rules found.
No public exploits indexed.
2026-03-05
Published