OpenClaw Canvas Path Traversal Information Disclosure Vulnerability

March 30th, 2026
ZDI-26-227 ZDI-CAN-29312

CVE ID

CVE-2026-3689

CVSS Score

6.5 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected Vendors

OpenClaw

Affected Products

OpenClaw

Vulnerability Details

This vulnerability allows remote attackers to disclose sensitive information on affected installations of OpenClaw. Authentication is required to exploit this vulnerability.

The specific flaw exists within the handling of the path parameters provided to the canvas gateway endpoint. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of the service account.

Additional Details

OpenClaw has issued an update to correct this vulnerability. More details can be found at:
https://github.com/openclaw/openclaw/security/advisories/GHSA-jq4x-98m3-ggq6

Disclosure Timeline

  • 2026-02-20 - Vulnerability reported to vendor
  • 2026-03-30 - Coordinated public release of advisory
  • 2026-03-30 - Advisory Updated

Credit

Peter Girnus (@gothburz) and Project AESIR of TrendAI Zero Day Initiative

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