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.

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 2026-09-26.

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

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Openclaw

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/openclaw/openclaw/security/advisories/GHSA-fphf-69cp-h5xw (vendor-advisory)
www.vulncheck.com/advisories/openclaw-before-2026.8.1-path-traversal-via-struct… (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.