CVE-2026-40045

Credential disclosure via cleartext remote WebSockets

Published Apr 20, 2026 · Updated Apr 20, 2026

Cleartext transmission in the Android gateway client before 2026.4.2 allows attackers to obtain credentials via forged setup data. GatewayConfigResolver accepted non-loopback ws:// URLs from discovery results and scanned setup codes, while ConnectionManager returned no TLS parameters and GatewaySession sent stored authentication over the resulting cleartext WebSocket. A user must select a forged discovery result or scan a crafted setup code; exposure is limited to plaintext gateway credentials.

CVSS severity5.9
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in the Android gateway client before 2026.4.2 allows attackers to obtain credentials via forged setup data. GatewayConfigResolver accepted non-loopback ws:// URLs from discovery results and scanned setup codes, while ConnectionManager returned no TLS parameters and GatewaySession sent stored authentication over the resulting cleartext WebSocket. A user must select a forged discovery result or scan a crafted setup code; exposure is limited to plaintext gateway credentials.

The record

CVE
CVE-2026-40045
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-319
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 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 <2026.4.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.4.2

Published CVSS scores

5.7VulnCheckCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
5.9VulnCheckCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/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.

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No observations available

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

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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