# Apache Log4j vulnerabilities

Source: https://junglewise.ai/threats/technologies/log4j  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/log4j.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Apache Log4j: 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2022-23305, was published on 21 January 2022.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 3 (2 critical, 0 exploited in the wild)

## About Apache Log4j

Java logging library for recording application events and diagnostic messages.

## Latest Apache Log4j vulnerabilities

- [CVE-2022-23305: Apache Log4j SQL injection in JDBCAppender](https://junglewise.ai/threats/cve-2022-23305-apache-log4j-sql-injection-in-jdbcappender) (critical, CVSS 9.8, published 21 Jan 2022)
- [CVE-2020-9488: Apache Log4j improper certificate validation in SMTP appender](https://junglewise.ai/threats/cve-2020-9488-apache-log4j-improper-certificate-validation-in-smtp-appender) (low, CVSS 3.7, published 5 Jun 2020)
- [CVE-2019-17571: Apache Log4j deserialization in SocketServer](https://junglewise.ai/threats/cve-2019-17571-apache-log4j-deserialization-in-socketserver) (critical, CVSS 9.8, published 6 Jan 2020)

## Most severe Apache Log4j vulnerabilities

- [CVE-2019-17571: Apache Log4j deserialization in SocketServer](https://junglewise.ai/threats/cve-2019-17571-apache-log4j-deserialization-in-socketserver) (critical, CVSS 9.8, published 6 Jan 2020)
- [CVE-2022-23305: Apache Log4j SQL injection in JDBCAppender](https://junglewise.ai/threats/cve-2022-23305-apache-log4j-sql-injection-in-jdbcappender) (critical, CVSS 9.8, published 21 Jan 2022)
- [CVE-2020-9488: Apache Log4j improper certificate validation in SMTP appender](https://junglewise.ai/threats/cve-2020-9488-apache-log4j-improper-certificate-validation-in-smtp-appender) (low, CVSS 3.7, published 5 Jun 2020)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Apache technologies

- [Apache Airflow](https://junglewise.ai/threats/technologies/airflow): 95 vulnerabilities
- [Apache Camel](https://junglewise.ai/threats/technologies/camel): 87 vulnerabilities
- [Apache Tomcat](https://junglewise.ai/threats/technologies/tomcat): 87 vulnerabilities
- [Apache Thrift](https://junglewise.ai/threats/technologies/thrift): 77 vulnerabilities
- [Apache Ofbiz](https://junglewise.ai/threats/technologies/ofbiz): 67 vulnerabilities
- [Apache HTTP Server](https://junglewise.ai/threats/technologies/http-server): 62 vulnerabilities
- [Apache Traffic Server](https://junglewise.ai/threats/technologies/traffic-server): 55 vulnerabilities
- [Apache Brpc](https://junglewise.ai/threats/technologies/brpc): 36 vulnerabilities
- [Apache Roller](https://junglewise.ai/threats/technologies/roller): 30 vulnerabilities
- [Apache CloudStack](https://junglewise.ai/threats/technologies/cloudstack): 28 vulnerabilities
- [Apache ActiveMQ](https://junglewise.ai/threats/technologies/activemq): 27 vulnerabilities
- [Apache Apisix](https://junglewise.ai/threats/technologies/apisix): 27 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Apache Log4j vulnerabilities", https://junglewise.ai/threats/technologies/log4j, 12 November 2026.