PatchSiren cyber security CVE debrief

CVE-2026-53806 OpenClaw CVE debrief

CVE-2026-53806 is a HIGH severity vulnerability in OpenClaw that allows combined POSIX shell flags to bypass exec revalidation checks, potentially enabling unauthorized command execution. The vulnerability has a CVSS score of 7.7 and was published on 2026-06-11T21:16:22.443Z. The affected product is OpenClaw, and the vulnerability is tracked under CWE-367.

Vendor: OpenClaw
Product: Unknown
CVSS: HIGH 7.7
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-11
Original CVE updated: 2026-06-12
Advisory published: 2026-06-11
Advisory updated: 2026-06-12

Who should care

Users of OpenClaw before version 2026.5.12 should apply the patch to prevent exploitation of this vulnerability.

Technical summary

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.

Defensive priority

HIGH

Recommended defensive actions

Upgrade OpenClaw to version 2026.5.12 or later to fix the vulnerability.
Refer to [ref-4](https://github.com/openclaw/openclaw/security/advisories/GHSA-vxx3-6hc9-7cc3) and [ref-5](https://www.vulncheck.com/advisories/openclaw-shell-option-parsing-bypass-in-exec-revalidation) for additional -
For more information, see the CVE record at [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-53806) and the NVD detail at [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-53806).

Evidence notes

The vulnerability was published on 2026-06-11T21:16:22.443Z and modified on 2026-06-12T19:33:05.493Z. The CVSS vector is 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.

Official resources

CVE-2026-53806 CVE record
CVE.org
CVE-2026-53806 NVD detail
NVD
Source item URL
nvd_modified
Mitigation or vendor reference
[email protected] - Mitigation, Vendor Advisory
Mitigation or vendor reference
[email protected] - Third Party Advisory

CVE-2026-53806 was published on 2026-06-11T21:16:22.443Z and modified on 2026-06-12T19:33:05.493Z.