CVE-2026-53820— OpenClaw < 2026.5.12 - Exec Denylist Bypass in Bundle MCP Loopback Session Spawn
Quick assessment
Affected
OpenClaw OpenClaw
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
OpenClaw是OpenClaw团队开源的一个智能人工助理。 OpenClaw 2026.5.12之前版本存在授权问题漏洞，该漏洞源于bundle MCP loopback session-spawn路径中的exec denylist绕过漏洞，允许经过身份验证的调用者绕过预期的命令限制，攻击者可以访问受影响的捆绑MCP session-spawn路径，启动具有比预期更广泛命令范围的会话。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-53820
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
OpenClaw < 2026.5.12 - Exec Denylist Bypass in Bundle MCP Loopback Session Spawn
Source: CVE Program / CVE List V5
Vulnerability Description
OpenClaw before 2026.5.12 contains an exec denylist bypass vulnerability in the bundle MCP loopback session-spawn path that allows authenticated callers to bypass intended command restrictions. Attackers can reach the affected bundled MCP session-spawn path to start sessions with broader command reach than intended.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
OpenClaw 授权问题漏洞
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 2026.5.12之前版本存在授权问题漏洞，该漏洞源于bundle MCP loopback session-spawn路径中的exec denylist绕过漏洞，允许经过身份验证的调用者绕过预期的命令限制，攻击者可以访问受影响的捆绑MCP session-spawn路径，启动具有比预期更广泛命令范围的会话。
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-2026-53820
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-53820
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-53820 (2)
Same Patch Batch · OpenClaw · 2026-06-12 · 20 CVEs total
| CVE-2026-53838 | 9.8 CRITICAL | OpenClaw < 2026.5.27 - Node Pairing State Mutation via Reconnection |
| CVE-2026-53822 | 8.8 HIGH | OpenClaw < 2026.5.18 - Command Argument Modification via Shell Wrapper Between Approval an |
| CVE-2026-53836 | 8.8 HIGH | OpenClaw < 2026.5.12 - Allowlist Bypass via PowerShell Encoded-Command Aliases |
| CVE-2026-53821 | 8.8 HIGH | OpenClaw < 2026.5.18 - Scope Elevation in trusted-proxy Control UI WebSocket |
| CVE-2026-53828 | 8.8 HIGH | OpenClaw < 2026.5.6 - Native Command Authorization Bypass via Owner-Command Enforcement |
| CVE-2026-53831 | 8.3 HIGH | OpenClaw < 2026.5.18 - Arbitrary File Read via Shell Expansion in system.run Safe-bin Allo |
| CVE-2026-53823 | 8.1 HIGH | OpenClaw < 2026.5.3 - Privilege Escalation via Mutable Slack Display Names in allowFrom |
| CVE-2026-53829 | 8.0 HIGH | OpenClaw < 2026.5.18 - Command Truncation in Exec Approval Display |
| CVE-2026-53833 | 7.7 HIGH | QQBot for OpenClaw < 2026.4.29 - Authorization Bypass via QQBot Streaming Command |
| CVE-2026-53832 | 7.7 HIGH | OpenClaw < 2026.5.18 - Identity Header Forgery via Trusted-Proxy Configuration |
| CVE-2026-53834 | 7.5 HIGH | OpenClaw < 2026.4.27 - Authorization Bypass in QQBot Pre-dispatch Slash Commands |
| CVE-2026-53830 | 6.5 MEDIUM | OpenClaw < 2026.4.22 - Webhook Secret Revocation Bypass via secrets.reload |
| CVE-2026-53839 | 6.5 MEDIUM | OpenClaw < 2026.5.7 - Hostname Prefix Matching Bypass in Trusted Retry Endpoint Validation |
| CVE-2026-53827 | 6.5 MEDIUM | OpenClaw < 2026.5.2 - Credential Exposure via Model-Supplied Loopback URLs in message.acti |
| CVE-2026-53825 | 6.5 MEDIUM | OpenClaw < 2026.4.7 - Arbitrary Local File Read via memory-wiki Ingest with operator.write |
| CVE-2026-53824 | 6.5 MEDIUM | Mattermost plugin for OpenClaw < 2026.4.24 - Slash Token Revocation Lag via Monitor Refres |
| CVE-2026-53826 | 4.3 MEDIUM | OpenClaw < 2026.4.26 - Information Disclosure via Sandboxed Session Spawn |
| CVE-2026-53835 | 4.3 MEDIUM | OpenClaw < 2026.5.6 - Config-Write Enforcement Bypass in Feishu Dynamic-Agent Bindings |
| CVE-2026-53837 | 3.7 LOW | OpenClaw < 2026.5.6 - Missing Channel Type Validation in Mattermost Event Handlers |
IV. Related Vulnerabilities
Same product: 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 vendor: 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 weakness: CWE-862
-
CVE-2026-75866
Punk::OAuth2::Server versions through 0.03 for Perl issue ac -
CVE-2026-5093
Greenshift <= 12.8.9 - Authenticated (Contributor+) Theme Se -
CVE-2026-4244
Post Duplicator <= 3.0.11 - Missing Authorization to Authent -
CVE-2026-12710
Missing Authorization in Application Integration QueryEngine -
CVE-2026-75027
Themify Builder <= 7.8.0 - Missing Authorization to Unauthen
V. Comments for CVE-2026-53820
No comments yet