CVE-2026-100536 OpenClaw before 2026.8.1 Path Traversal via Structured Attachments
Attackers can bypass sandbox validation to read and exfiltrate arbitrary host files via crafted structured attachments in OpenClaw.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-100536?
CVE-2026-100536 is a high-severity path traversal vulnerability in OpenClaw, published on 26 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-100536?
How do I fix CVE-2026-100536?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-100536 being exploited?
There is no known exploitation of CVE-2026-100536 in the wild and no public exploit code.
Sources
Also known as GHSA-fphf-69cp-h5xw, GHSA-xwq7-8jj4-2g7j, MINI-xpgg-242q-g8v9.