What is CVE-2026-53855?

CVE-2026-53855 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-2026-53855?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Openclaw

CVE-2026-53855

OpenClaw before 2026.4.2 contains an inline-eval bypass vulnerability allowing authenticated operators to weaken strict allowlist checks via shell positional parameters. Attackers can combine allowlisted tools with shell positional argumen…

EPSS: 0.003 (17.7th percentile) — read the EPSS interpretation.

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.

Affected products

Openclaw — versions 0, 2026.4.2

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs
CWE-863 — Incorrect Authorization

References

disclosure@vulncheck.com (vendor-advisory, Vendor Advisory)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-53855?: CVE-2026-53855 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-2026-53855?: High severity. CVSS v3 base score is 8.1 out of 10.