CVE-2026-53859— OpenClaw < 2026.5.26 - Hostname Validation Bypass via Trailing-Dot Inconsistency
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-53859
Vulnerability Information
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Vulnerability Title
OpenClaw < 2026.5.26 - Hostname Validation Bypass via Trailing-Dot Inconsistency
Source: CVE Program / CVE List V5
Vulnerability Description
OpenClaw before 2026.5.26 contains a hostname validation vulnerability allowing attackers to bypass blocklist comparisons using trailing-dot notation in model or workspace-derived URLs. Attackers can exploit inconsistent hostname checks to reach destinations that operators intended to block through hostname policies.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缺失要素致使对比不完全
Source: CVE Program / CVE List V5
Vulnerability Title
OpenClaw 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenClaw是OpenClaw团队开源的一个智能人工助理。 OpenClaw 2026.5.26之前版本存在处理逻辑错误漏洞，该漏洞源于主机名验证问题，导致攻击者可以在模型或工作空间派生URL中使用尾点标记来绕过拦截列表比较，并利用不一致的主机名检查访问本应被阻止的目的地。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-53859
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Vendor Advisories for CVE-2026-53859 (2)
Same Patch Batch · OpenClaw · 2026-06-16 · 27 CVEs total
| CVE-2026-53843 | 8.8 HIGH | OpenClaw < 2026.5.26 - Node Token Revocation Bypass via Pairing-Scoped Device Session |
| CVE-2026-53853 | 8.3 HIGH | OpenClaw < 2026.5.12 - Argument Pattern Bypass in Exec Allowlist via Linux and macOS |
| CVE-2026-53849 | 8.1 HIGH | OpenClaw < 2026.5.7 - Privilege Escalation via Mutable Discord Display Names in allowFrom |
| CVE-2026-53857 | 8.1 HIGH | OpenClaw < 2026.5.3 - Mutable Display Name Binding in Zalo allowFrom Policy |
| CVE-2026-53864 | 8.1 HIGH | OpenClaw < 2026.5.26 - Insufficient Environment Variable Sanitization in Node.js Control V |
| CVE-2026-53855 | 8.1 HIGH | OpenClaw < 2026.4.2 - Shell Positional Parameters Bypass in Inline-Eval Checks |
| CVE-2026-53866 | 8.1 HIGH | OpenClaw < 2026.5.12 - Allowlist Bypass in Shell Inline-Command Parsing |
| CVE-2026-53863 | 7.1 HIGH | OpenClaw < 2026.4.25 - Unvalidated Group ID Acceptance in Tool Group Policy |
| CVE-2026-53846 | 7.1 HIGH | OpenClaw < 2026.4.29 - Arbitrary Package Manager Execution via Workspace .env npm_execpath |
| CVE-2026-53865 | 7.1 HIGH | OpenClaw < 2026.5.2 - Arbitrary Command Execution via Workspace-Derived Service PATH |
| CVE-2026-53858 | 7.1 HIGH | OpenClaw < 2026.5.2 - Arbitrary Runtime Dependency Loading via STATE_DIRECTORY Environment |
| CVE-2026-53840 | 7.1 HIGH | OpenClaw < 2026.5.12 - Custom Header Leakage via MCP Streamable HTTP Cross-Origin Redirect |
| CVE-2026-53842 | 7.1 HIGH | OpenClaw < 2026.5.2 - Arbitrary Python Runtime Execution via CLOUDSDK_PYTHON Environment V |
| CVE-2026-53861 | 6.6 MEDIUM | OpenClaw < 2026.5.6 - Allowlist Bypass via Combined POSIX Inline Flags on macOS |
| CVE-2026-53854 | 6.5 MEDIUM | OpenClaw < 2026.4.25 - Privilege Escalation via ownerAllowFrom Wildcard Inheritance in Int |
| CVE-2026-53844 | 6.5 MEDIUM | OpenClaw < 2026.4.29 - Session Visibility Check Bypass in Shared Memory Search |
| CVE-2026-53841 | 6.1 MEDIUM | OpenClaw < 2026.5.12 - Cross-Site Scripting via Unsafe Markdown Links in Exported Session |
| CVE-2026-53856 | 5.5 MEDIUM | OpenClaw 2026.4.23 < 2026.4.24 - Insecure File Permissions in Config Recovery via OpenClaw |
| CVE-2026-53850 | 5.5 MEDIUM | OpenClaw < 2026.4.25 - Control Scope Enforcement Bypass in Focus Command |
| CVE-2026-53852 | 5.4 MEDIUM | OpenClaw < 2026.4.25 - Scope Bypass via Empty-Scope Device Re-pairing |
Showing top 20 of 27 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: OpenClaw
- CVE-2026-62229
OpenClaw < 2026.5.18 Authorization Bypass via Glob Matching - CVE-2026-62228
OpenClaw < 2026.6.5 Authorization Bypass via Node Exec Appro - CVE-2026-62227
OpenClaw 2026.4.14 < 2026.5.26 SSRF via Browser Snapshot - CVE-2026-62225
OpenClaw < 2026.5.18 Authorization Bypass via Skill Command - CVE-2026-62226
OpenClaw 2026.3.28 < 2026.5.19 Authorization Bypass via Brow
Same vendor: OpenClaw
- CVE-2026-62228
OpenClaw < 2026.6.5 Authorization Bypass via Node Exec Appro - CVE-2026-62229
OpenClaw < 2026.5.18 Authorization Bypass via Glob Matching - CVE-2026-62227
OpenClaw 2026.4.14 < 2026.5.26 SSRF via Browser Snapshot - CVE-2026-62226
OpenClaw 2026.3.28 < 2026.5.19 Authorization Bypass via Brow - CVE-2026-62225
OpenClaw < 2026.5.18 Authorization Bypass via Skill Command
Same weakness: CWE-1023
V. Comments for CVE-2026-53859
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