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I. Basic Information for CVE-2026-25598
Vulnerability Information

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Vulnerability Title
Bypassing Logging of Outbound Connections Using sendto, sendmsg, and sendmmsg in Harden-Runner (Community Tier)
Source: NVD (National Vulnerability Database)
Vulnerability Description
Harden-Runner is a CI/CD security agent that works like an EDR for GitHub Actions runners. Prior to 2.14.2, a security vulnerability has been identified in the Harden-Runner GitHub Action (Community Tier) that allows outbound network connections to evade audit logging. Specifically, outbound traffic using the sendto, sendmsg, and sendmmsg socket system calls can bypass detection and logging when using egress-policy: audit. This vulnerability is fixed in 2.14.2.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不充分的日志记录
Source: NVD (National Vulnerability Database)
Vulnerability Title
Harden-Runner 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Harden-Runner是StepSecurity开源的一个程序。为 GitHub 托管和自托管的跑步者提供网络出口过滤和运行时安全。 Harden-Runner 2.14.2之前版本存在安全漏洞,该漏洞源于出站网络连接可绕过审计日志记录,可能导致检测和日志记录失效。
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
VendorProductAffected VersionsCPESubscribe
step-securityharden-runner < 2.14.2 -
II. Public POCs for CVE-2026-25598
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III. Intelligence Information for CVE-2026-25598
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IV. Related Vulnerabilities
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