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CVE-2026-28391 โ€” AI Deep Analysis Summary

CVSS 9.8 ยท Critical

Q1What is this vulnerability? (Essence + Consequences)

๐Ÿšจ **Essence**: OpenClaw fails to validate Windows `cmd.exe` metacharacters properly. ๐Ÿ“‰ **Consequences**: Attackers bypass command approval limits and execute unauthorized commands.โ€ฆ

Q2Root Cause? (CWE/Flaw)

๐Ÿ›ก๏ธ **Root Cause**: Improper input validation of shell metacharacters. โš ๏ธ **Flaw**: The allowlist enforcement logic is bypassed via `cmd.exe` parsing quirks.โ€ฆ

Q3Who is affected? (Versions/Components)

๐Ÿ‘ฅ **Affected**: Users of **OpenClaw** (OpenClaw open-source AI assistant). ๐Ÿ“… **Versions**: All versions **prior to 2026.2.2**. ๐Ÿข **Vendor**: OpenClaw.

Q4What can hackers do? (Privileges/Data)

๐Ÿ’ป **Privileges**: High. CVSS Score indicates **High** Confidentiality, Integrity, and Availability impact. ๐Ÿ•ต๏ธ **Action**: Execute **unapproved commands** on the host.โ€ฆ

Q5Is exploitation threshold high? (Auth/Config)

๐Ÿ”“ **Threshold**: **Low**. ๐Ÿšซ **Auth**: No authentication required (PR:N). ๐Ÿ‘๏ธ **UI**: No user interaction needed (UI:N). ๐ŸŒ **Vector**: Network accessible (AV:N). โšก **Complexity**: Low (AC:L).

Q6Is there a public Exp? (PoC/Wild Exploitation)

๐Ÿšซ **Public Exp**: No public PoC or exploit code listed in the data. ๐Ÿ“œ **References**: Only vendor advisory and patch commit links available. ๐Ÿ•ต๏ธ **Status**: Theoretical/Unpatched exploitation risk exists.

Q7How to self-check? (Features/Scanning)

๐Ÿ” **Check**: Scan for OpenClaw installations. ๐Ÿ“ฆ **Version**: Verify if version < **2026.2.2**. ๐Ÿ› ๏ธ **Tool**: Use VulnCheck or GitHub Security Advisories to detect presence.โ€ฆ

Q8Is it fixed officially? (Patch/Mitigation)

โœ… **Fixed**: Yes. ๐Ÿ“ฆ **Patch**: Update to **OpenClaw 2026.2.2** or later. ๐Ÿ”— **Source**: Official patch commit available on GitHub (a7f4a53ce80c98ba1452eb90802d447fca9bf3d6).

Q9What if no patch? (Workaround)

๐Ÿšง **Workaround**: If patching is delayed, restrict network access to OpenClaw services. ๐Ÿ›‘ **Mitigation**: Implement strict WAF rules to block `cmd.exe` metacharacter injection attempts.โ€ฆ

Q10Is it urgent? (Priority Suggestion)

๐Ÿ”ฅ **Urgency**: **Critical**. ๐Ÿ“ˆ **CVSS**: High severity (H/H/H). โณ **Time**: Immediate patching recommended. ๐Ÿšจ **Priority**: High. Do not ignore this vulnerability.