CVE-2026-45003: OpenClaw < 2026.4.22 - Connector Endpoint Host Override via Workspace dotenv Files

Severity: medium (CVSS 5.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-11 · updated 2026-06-17
Weakness: CWE-441

Description

OpenClaw before 2026.4.22 allows workspace dotenv files to override connector endpoint hosts for Matrix, Mattermost, IRC, and Synology connectors. Attackers with workspace access can redirect runtime traffic to malicious endpoints by setting endpoint variables in dotenv files.

Affected products

OpenClaw: before 2026.4.22 — fixed in 2026.4.22

How to fix

Upgrade to a fixed version: OpenClaw 2026.4.22. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/commit/0623079e98abf7202591f1b04a89755eb7ec9272
https://github.com/openclaw/openclaw/security/advisories/GHSA-55cf-xx38-4p9p
https://www.vulncheck.com/advisories/openclaw-connector-endpoint-host-override-via-workspace-dotenv-files

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