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CVE-2026-53855: OpenClaw: Shell positional parameters could weaken strict inline-eval checks

June 18, 2026

Shell positional parameters could weaken strict inline-eval checks. In affected versions, a command request that combines allowlisted tools with shell positional arguments could place inline-eval content in a shell carrier not covered by the strict check.

This advisory is scoped to the named feature and configuration. It does not change OpenClaw’s trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed.

References

  • github.com/advisories/GHSA-5cj2-3jr2-5h77
  • github.com/openclaw/openclaw/security/advisories/GHSA-5cj2-3jr2-5h77
  • nvd.nist.gov/vuln/detail/CVE-2026-53855
  • www.vulncheck.com/advisories/openclaw-shell-positional-parameters-bypass-in-inline-eval-checks

Code Behaviors & Features

Detect and mitigate CVE-2026-53855 with GitLab Dependency Scanning

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Affected versions

All versions before 2026.4.2

Fixed versions

  • 2026.4.2

Solution

Upgrade to version 2026.4.2 or above.

Impact 8.1 HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-269: Improper Privilege Management
  • CWE-284: Improper Access Control
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  • CWE-863: Incorrect Authorization

Source file

npm/openclaw/CVE-2026-53855.yml

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