Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/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:XSummary
CVE-2026-27566 is a high-severity OS Command Injection (CWE-78) vulnerability in Openclaw Openclaw. Its CVSS base score is 7.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked at the 35th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
OpenClaw versions prior to 2026.2.22 are affected by CVE-2026-27566, an allowlist bypass vulnerability in the system.run exec analysis component. The flaw arises from a failure to unwrap environment variables and shell-dispatch wrapper chains, enabling attackers to route execution through wrapper binaries such as env bash. This allows payloads to satisfy allowlist entries while executing non-allowlisted commands. The vulnerability is classified under CWE-78 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) with a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L).
Attackers with low privileges (PR:L) can exploit this vulnerability over the network (AV:N) with low complexity and no user interaction required. By chaining wrapper binaries, they can bypass the allowlist restrictions in system.run exec analysis, achieving high integrity impact (I:H) through execution of unauthorized commands and low availability impact (A:L), while confidentiality remains unaffected (C:N).
Mitigation details are available in official advisories and the patch commit. The GitHub security advisory (GHSA-jj82-76v6-933r) and the fix in commit 2b63592be57782c8946e521bc81286933f0f99c7 address the unwrapping failure. Vulncheck's advisory further describes the allowlist bypass via wrapper binary unwrapping in system.run. Users should update to OpenClaw version 2026.2.22 or later to remediate the issue.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-13007
Vulnerability Data
OpenClaw versions prior to 2026.2.22 contain an allowlist bypass vulnerability in system.run exec analysis that fails to unwrap env and shell-dispatch wrapper chains. Attackers can route execution through wrapper binaries like env bash to smuggle payloads that satisfy allowlist entries…
more
while executing non-allowlisted commands.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.5V1.2.8V15.2.5
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation can discover missing or incorrect command sanitization during development.
Input validation directly neutralizes or rejects special characters that would otherwise alter OS command structure.
Least privilege reduces the permissions available to any process that could be subverted by injected commands.
Least functionality restricts available OS commands and interpreters, limiting the blast radius of injection.
Secure engineering principles require proper neutralization of untrusted input before command construction.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.
Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.