Path Traversal in Openclaw
CVE-2026-100536
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (37.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-fphf-69cp-h5xw) (vendor-advisory)
- VulnCheck Advisory: OpenClaw before 2026.8.1 Path Traversal via Structured Attachments (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100536?
- CVE-2026-100536 is a medium-severity vulnerability in Openclaw, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-09-26.
- How severe is CVE-2026-100536?
- Medium severity. CVSS v3 base score is 6.5 out of 10.