CVE-2025-12969
Quick assessment
Affected
FluentBit Fluent Bit
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.
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。
Possible ATT&CK Techniques 3 AI
T1059 · Command and Scripting Interpreter T1565 · Data Manipulation T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-12969
Vulnerability Information
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Vulnerability Title
CVE-2025-12969
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| FluentBit | Fluent Bit | 0 ~ 4.0.13 | - |
|
II. Public POCs for CVE-2025-12969
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Security Blog Posts for CVE-2025-12969 (2)
Same Patch Batch · FluentBit · 2025-11-24 · 5 CVEs total
| CVE-2025-12978 | CVE-2025-12978 | |
| CVE-2025-12972 | CVE-2025-12972 | |
| CVE-2025-12977 | CVE-2025-12977 | |
| CVE-2025-12970 | CVE-2025-12970 |
IV. Related Vulnerabilities
V. Comments for CVE-2025-12969
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