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GHSA-fh32-73r9-rgh5

MediumCVSS 5.8 / 10
Published Apr 7, 2026·Last modified May 6, 2026
Affected Components(0)

No affected components available

Description

Summary

Before OpenClaw 2026.4.2, remote CDP discovery could return a trailing-dot localhost host such as localhost. and bypass OpenClaw's loopback-host normalization. That let a non-loopback remote CDP profile pivot the follow-up connection back onto localhost.

Impact

A hostile discovery response could retarget authenticated browser control toward a localhost-resolving endpoint on the OpenClaw host. This weakened the existing remote-CDP loopback protection and could expose localhost-backed browser state.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Affected versions: <= 2026.4.1
  • Patched versions: >= 2026.4.2
  • Latest published npm version: 2026.4.1

Fix Commit(s)

  • 9c22d636697336a6b22b0ae24798d8b8325d7828 — normalize localhost absolute-form CDP hosts before loopback checks

Release Process Note

The fix is present on main and is staged for OpenClaw 2026.4.2. Publish this advisory after the 2026.4.2 npm release is live.

Thanks @smaeljaish771 for reporting.

Risk Scores
Base Score
5.8

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information.

Threat Intelligence
5.3

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.25%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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