Known Vulnerabilities for Log4j by Apache

Listed below are 10 of the newest known vulnerabilities associated with "Log4j" by "Apache".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-49844 json Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces outpu... Not Provided 2026-07-10 2026-07-10
CVE-2026-34481 json Apache Log4j's JsonTemplateLayout https://logging.apache.org/log4j/2.x/manual/json-template-layout.html , in versions up to ... Not Provided 2026-04-10 2026-07-11
CVE-2026-34480 json Not Provided 2026-04-10 2026-04-24
CVE-2026-34479 json Not Provided 2026-04-10 2026-05-06
CVE-2026-34478 json Not Provided 2026-04-10 2026-04-24
CVE-2026-34477 json Not Provided 2026-04-10 2026-05-06
CVE-2023-26464 json ** UNSUPPORTED WHEN ASSIGNED ** When using the Chainsaw or SocketAppender components with Log4j 1.x on JRE less than 1.7, an... 7.5 - HIGH 2023-03-10 2023-05-05
CVE-2022-33915 json Versions of the Amazon AWS Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.3.5 are affected by a race co... 7 - HIGH 2022-06-17 2022-07-05
CVE-2022-23307 json CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a c... 7 - HIGH 2022-01-18 2026-05-22
CVE-2022-23305 json By design, the JDBCAppender in Log4j 1.2.x accepts an SQL statement as a configuration parameter where the values to be inser... 7 - HIGH 2022-01-18 2026-05-27
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationApacheLog4j2.9.1
ApplicationApacheLog4j2.9.0
ApplicationApacheLog4j2.9.0
ApplicationApacheLog4j2.8.2
ApplicationApacheLog4j2.8.2
ApplicationApacheLog4j2.8.1
ApplicationApacheLog4j2.8.1
ApplicationApacheLog4j2.8.1
ApplicationApacheLog4j2.8
ApplicationApacheLog4j2.8
ApplicationApacheLog4j2.8
ApplicationApacheLog4j2.7
ApplicationApacheLog4j2.7
ApplicationApacheLog4j2.7
ApplicationApacheLog4j2.7
ApplicationApacheLog4j2.6.2
ApplicationApacheLog4j2.6.2
ApplicationApacheLog4j2.6.2
ApplicationApacheLog4j2.6.1
ApplicationApacheLog4j2.6.1
Results limited to 20 most recent known configurations
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