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…

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)
disclosure@vulncheck.com (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.