📦 Log4j

by Apache

🔍 What is Log4j?

Description coming soon...

🛡️ Security Overview

Click on a severity to filter vulnerabilities

⚠️ Known Vulnerabilities

CVE-2022-23305

CRITICAL CVSS 9.8 Jan 18, 2022

CVE-2022-23305 is an SQL injection vulnerability in Log4j 1.2.x's JDBCAppender that allows attackers to execute arbitrary SQL queries by injecting malicious strings into application inputs that get lo...

CVE-2021-45046

CRITICAL CVSS 9.0 Dec 14, 2021

CVE-2021-45046 is an incomplete fix for the Log4Shell vulnerability (CVE-2021-44228) in Apache Log4j 2.15.0 that allows attackers to execute arbitrary code via JNDI lookups in certain non-default logg...

CVE-2021-44228

CRITICAL CVSS 10.0 Dec 10, 2021

CVE-2021-44228 (Log4Shell) is a critical remote code execution vulnerability in Apache Log4j2 that allows attackers to execute arbitrary code by exploiting JNDI lookups in log messages. This affects a...

CVE-2020-9493

CRITICAL CVSS 9.8 Jun 16, 2021

CVE-2020-9493 is a critical deserialization vulnerability in Apache Chainsaw that allows remote attackers to execute arbitrary code by sending specially crafted data. This affects all Apache Chainsaw ...

CVE-2021-4104

HIGH CVSS 7.5 Dec 14, 2021

CVE-2021-4104 is a deserialization vulnerability in Log4j 1.2's JMSAppender that allows remote code execution when attackers can modify Log4j configuration files. This affects systems running Log4j 1....

CVE-2025-68161

MEDIUM CVSS 4.8 Dec 18, 2025

This vulnerability in Apache Log4j Core allows man-in-the-middle attackers to intercept or redirect encrypted log traffic when TLS hostname verification fails, even when configured to verify. It affec...