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I. Basic Information for CVE-2025-12969
Vulnerability Information

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Vulnerability Title
CVE-2025-12969
Source: NVD (National Vulnerability Database)
Vulnerability Description
Fluent Bit in_forward input plugin does not properly enforce the security.users authentication mechanism under certain configuration conditions. This allows remote attackers with network access to the Fluent Bit instance exposing the forward input to send unauthenticated data. By bypassing authentication controls, attackers can inject forged log records, flood alerting systems, or manipulate routing decisions, compromising the authenticity and integrity of ingested logs.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Fluent Bit 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fluent Bit是Fluent开源的一款使用C语言编写的开源日志处理和分析系统。 Fluent Bit存在安全漏洞,该漏洞源于未正确实施security.users身份验证机制,可能导致远程攻击者发送未经验证的数据,破坏日志真实性和完整性。
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
FluentBitFluent Bit 0 ~ 4.0.13 -
II. Public POCs for CVE-2025-12969
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III. Intelligence Information for CVE-2025-12969
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IV. Related Vulnerabilities
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