CVE-2026-100536: OpenClaw before 2026.8.1 Path Traversal via Structured Attachments
OpenClaw versions before 2026.8.1 fail to validate all source fields in structured message attachments, allowing attackers to hide unvalidated host paths behind allowed attachment sources. Attackers can exploit this by providing multiple source fields to bypass sandbox path validation and cause Telegram delivery to read and send known host files that would otherwise be rejected.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
OpenClawto a version that resolves this vulnerability.Fixed in 2026.8.1
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The CVSS vector indicates low privileges are required (PR:L). No user interaction is required (UI:N).
Which workflows are implicated?
The documented impact occurs when structured message attachments are processed for Telegram delivery. Exploitation relies on providing multiple source fields so that an unvalidated host path is hidden behind an allowed attachment source.
What is the likely security impact?
An attacker may cause Telegram delivery to read and send known files from the host that sandbox path validation would otherwise reject. The reported impact is confidentiality loss, with no stated integrity or availability impact.