Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-27576— OpenClaw: ACP prompt-size checks missing in local stdio bridge could reduce responsiveness with very large inputs

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开源的一个智能人工助理。 OpenClaw 2026.2.17及之前版本存在资源管理错误漏洞，该漏洞源于ACP桥接器接受过大的提示文本块，可能导致本地ACP客户端处理异常输入时出现问题。

AI Predicted 4.3 Difficulty: Easy EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-27576

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: ACP prompt-size checks missing in local stdio bridge could reduce responsiveness with very large inputs
Source: CVE Program / CVE List V5
Vulnerability Description
OpenClaw is a personal AI assistant. In versions 2026.2.17 and below, the ACP bridge accepts very large prompt text blocks and can assemble oversized prompt payloads before forwarding them to chat.send. Because ACP runs over local stdio, this mainly affects local ACP clients (for example IDE integrations) that send unusually large inputs. This issue has been fixed in version 2026.2.19.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenClaw 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenClaw是openclaw开源的一个智能人工助理。 OpenClaw 2026.2.17及之前版本存在资源管理错误漏洞，该漏洞源于ACP桥接器接受过大的提示文本块，可能导致本地ACP客户端处理异常输入时出现问题。
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

Vendor Product Affected Versions CPE Subscribe
openclaw openclaw < 2026.2.19 -

II. Public POCs for CVE-2026-27576

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-27576

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-27576 (1)

Same Patch Batch · openclaw · 2026-02-21 · 6 CVEs total

CVE-2026-27487 7.6 HIGH OpenClaw: Prevent shell injection in macOS keychain credential write
CVE-2026-27488 OpenClaw hardened cron webhook delivery against SSRF
CVE-2026-27486 OpenClaw: Process Safety - Unvalidated PID Kill via SIGKILL in Process Cleanup
CVE-2026-27485 OpenClaw affected by Stored XSS in Control UI via unsanitized assistant name/avatar in inl
CVE-2026-27484 OpenClaw Discord moderation authorization used untrusted sender identity in tool-driven fl

IV. Related Vulnerabilities

Same product: openclaw
Same vendor: openclaw
Same weakness: CWE-400