CVE-2026-53836

Name: CVE-2026-53836
Creator: NVD / NIST
Published: 2026-06-12T22:16:55.413+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2026-53836 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. OpenClaw before 2026.5.12 contains an allowlist bypass vulnerability in PowerShell encoded-command handling that allows attackers to execute encoded commands using abbreviated flag aliases not recognized by the allowlist parser. Remote authenticated operators can bypass execution allowlist checks by using unrecognized encoded-command alias forms to execute arbitrary PowerShell content.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

OpenClaw before 2026.5.12 contains an allowlist bypass vulnerability in PowerShell encoded-command handling that allows attackers to execute encoded commands using abbreviated flag aliases not recognized by the allowlist parser. Remote authenticated operators can bypass execution allowlist checks by using unrecognized encoded-command alias forms to execute arbitrary PowerShell content.

Metrics

CVSS 3.1

8.8/10

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

CVSS 4.0

8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.45%

35.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-184

Affected Software

Vendor	Product	Versions
Openclaw	Openclaw	< 2026.5.12

References

https://github.com/openclaw/openclaw/security/advisories/GHSA-j472-gf56-x589Mitigation, Vendor Advisory
https://www.vulncheck.com/advisories/openclaw-allowlist-bypass-via-powershell-encoded-command-aliasesThird Party Advisory

Timeline

Published: Jun 12, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-53836?

How severe is CVE-2026-53836?

CVE-2026-53836 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2026-53836?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-53836?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST