CVE-2025-54812— Apache Log4cxx: Improper HTML escaping in HTMLLayout
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I. Basic Information for CVE-2025-54812
Vulnerability Information
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Vulnerability Title
Apache Log4cxx: Improper HTML escaping in HTMLLayout
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper Output Neutralization for Logs vulnerability in Apache Log4cxx. When using HTMLLayout, logger names are not properly escaped when writing out to the HTML file. If untrusted data is used to retrieve the name of a logger, an attacker could theoretically inject HTML or Javascript in order to hide information from logs or steal data from the user. In order to activate this, the following sequence must occur: * Log4cxx is configured to use HTMLLayout. * Logger name comes from an untrusted string * Logger with compromised name logs a message * User opens the generated HTML log file in their browser, leading to potential XSS Because logger names are generally constant strings, we assess the impact to users as LOW This issue affects Apache Log4cxx: before 1.5.0. Users are recommended to upgrade to version 1.5.0, which fixes the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
日志输出的转义处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache Log4cxx 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Log4cxx是美国阿帕奇（Apache）基金会的一个以 Apache log4j 为模式的 C++ 日志框架。 Apache Log4cxx 1.5.0之前版本存在安全漏洞，该漏洞源于HTMLLayout未正确转义记录器名称，可能导致跨站脚本攻击。
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 |
|---|---|---|---|---|
| Apache Software Foundation | Apache Log4cxx | 0 ~ 1.5.0 | - |
II. Public POCs for CVE-2025-54812
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|---|
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Same Patch Batch · Apache Software Foundation · 2025-08-22 · 3 CVEs total
| CVE-2025-54813 | Apache Log4cxx: Improper escaping with JSONLayout | |
| CVE-2024-48988 | Apache StreamPark: SQL injection vulnerability |
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