CVE-2026-53806

Name: CVE-2026-53806
Creator: NVD / NIST
Published: 2026-06-11T21:16:22.443+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.7/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2026-53806 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. OpenClaw before 2026.5.12 contains a shell option parsing vulnerability that allows combined POSIX shell flags to bypass exec revalidation checks. Attackers can exploit this by using combined shell options to execute inline shell content without intended allowlist validation, potentially enabling unauthorized command execution when the affected feature is enabled.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

OpenClaw before 2026.5.12 contains a shell option parsing vulnerability that allows combined POSIX shell flags to bypass exec revalidation checks. Attackers can exploit this by using combined shell options to execute inline shell content without intended allowlist validation, potentially enabling unauthorized command execution when the affected feature is enabled.

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

7.7/10

CVSS:4.0/AV:N/AC:L/AT:P/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

0.42%

33.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-367

Affected Software

Vendor	Product	Versions
Openclaw	Openclaw	< 2026.5.12

References

https://github.com/openclaw/openclaw/security/advisories/GHSA-vxx3-6hc9-7cc3Mitigation, Vendor Advisory
https://www.vulncheck.com/advisories/openclaw-shell-option-parsing-bypass-in-exec-revalidationThird Party Advisory

Timeline

Published: Jun 11, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-53806?

How severe is CVE-2026-53806?

CVE-2026-53806 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2026-53806?

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-2026-53806?

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

Scan your code now

Source: NVD / NIST