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Log4j 1.2 is currently supported. Users are encouraged to migrate to [Apache
Log4j2](https://logging.apache.org/log4j/2.x/manual/migration.html).
-## Past Vulnerabilities
+## Unfixed Vulnerabilities
-See [Apache Log4j 1.2 Security Vulnerabilities](https://logging.apache.org/log4j/1.2/).
+Several security vulnerabilities have been discovered in Log4j 1.x
+since it was declared end of life. The following table lists the
+CVEs published about these issues.
+
+| Severity | CVE | Summary |
+|----------|-----|---------|
+| High | [CVE-2019-17571](https://www.cve.org/CVERecord?id=CVE-2019-17571) | SocketServer is vulnerable to a remote code execution vulnerability when an attacker can craft malicious serialized log events and send them to a listening SocketServer instance. |
+| Moderate | [CVE-2020-9488](https://www.cve.org/CVERecord?id=CVE-2020-9488) | SMTPAppender is vulnerable to a man-in-the-middle attack when using SMTPS due to lack of hostname verification in the TLS certificate. |
+| High | [CVE-2021-4104](https://www.cve.org/CVERecord?id=CVE-2021-4104) | JMSAppender is vulnerable to a remote code execution vulnerability when an attacker controls either the configuration file or target LDAP server used for setting the TopicBindingName and TopicConnectionFactoryBindingName configurations. |
+| High | [CVE-2022-23302](https://www.cve.org/CVERecord?id=CVE-2022-23302) | JMSSink is vulnerable to a remote code execution vulnerability when an attacker controls either the configuration file or target LDAP server used for setting the TopicConnectionFactoryBindingName configurations. |
+| High | [CVE-2022-23305](https://www.cve.org/CVERecord?id=CVE-2022-23305) | JDBCAppender is vulnerable to a SQL injection vulnerability when an attacker can craft a malicious log message written to a JDBCAppender. |
+| Critical | [CVE-2022-23307](https://www.cve.org/CVERecord?id=CVE-2022-23307) | Chainsaw versions bundled with Log4j prior to Chainsaw 2.1.0 are vulnerable to a remote code execution vulnerability when an attacker sends malicious serialized log events. See also [CVE-2020-9493](https://www.cve.org/CVERecord?id=CVE-2020-9493) for the CVE affecting the standalone version of Apache Chainsaw. |
+
+See also [Apache Log4j 1.2 Security Vulnerabilities](https://logging.apache.org/log4j/1.2/).
