Vulnerability in Openclaw
CVE-2026-53864
OpenClaw before 2026.5.26 contains an insufficient sanitization vulnerability in the host environment sanitizer that allows Node.js control variables to bypass validation. Attackers with access to workspace .env files, tool environment overrides, or skill environment blocks can pass malicious Node.js control variables to influence child processes or coverage output paths.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Openclaw — versions 0, 2026.5.26
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-ccwh-wwpp-6wg5 (vendor-advisory, Mitigation, Vendor Advisory)
- www.vulncheck.com/advisories/openclaw-insufficient-environment-variable-sanitiz… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-53864?
- CVE-2026-53864 is a high-severity vulnerability in Openclaw, classified under Incomplete List of Disallowed Inputs. CVSS score: 8.1/10. Published 2026-06-16.
- How severe is CVE-2026-53864?
- High severity. CVSS v3 base score is 8.1 out of 10.