CVE-2026-53836
PowerShell encoded-command allowlist bypass enables authenticated users to run encoded content.
Is CVE-2026-53836 being exploited?
Not confirmed. CVE-2026-53836 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-53836?
CVE-2026-53836 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-53836?
Yes. A fix has been recorded for CVE-2026-53836. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-53836 affect?
CVE-2026-53836 affects OpenClaw (before 2026.5.12), PowerShell encoded-command handling. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-53836?
Update to the patched OpenClaw version; verify PowerShell allowlist handling.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote authenticated attacker can bypass the allowlist and execute arbitrary PowerShell content, risking system compromise.
Patch when possible
- affected< 2026.5.12
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.