Path Traversal in Openclaw
CVE-2026-27523
OpenClaw versions prior to 2026.2.24 contain a sandbox bind validation vulnerability allowing attackers to bypass allowed-root and blocked-path checks via symlinked parent directories with non-existent leaf paths. Attackers can craft bind source paths that appear within allowed roots but resolve outside sandbox boundaries once missing leaf components are created, weakening bind-source isolation enforcement.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
EPSS: 0.004 (29.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Openclaw — versions 0
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-m8v2-6wwh-r4gc (vendor-advisory, Vendor Advisory, third-party-advisory)
- github.com/openclaw/openclaw/commit/b5787e4abba0dcc6baf09051099f6773c1679ec1 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-sandbox-bind-validation-bypass-via-symlin… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-27523?
- CVE-2026-27523 is a medium-severity vulnerability in Openclaw, classified under Path Traversal. CVSS score: 6.1/10. Published 2026-03-18.
- How severe is CVE-2026-27523?
- Medium severity. CVSS v3 base score is 6.1 out of 10.