Known Vulnerabilities for Apache Log4j 1.x by Apache Software Foundation

Listed below are 10 of the newest known vulnerabilities associated with "Apache Log4j 1.x" by "Apache Software Foundation".

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-2026-34481 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 2026-04-10
CVE-2026-34480 json Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.html#XmlLayout , in versions up to and inc... Not Provided 2026-04-10 2026-04-10
CVE-2026-34479 json The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, p... Not Provided 2026-04-10 2026-04-10
CVE-2026-34478 json Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.html#RFC5424Layout , in versions 2.21.... Not Provided 2026-04-10 2026-04-10
CVE-2026-34477 json The fix for CVE-2025-68161 https://logging.apache.org/security.html#CVE-2025-68161 was incomplete: it addressed hostname ve... Not Provided 2026-04-10 2026-04-10
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... Not Provided 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... Not Provided 2022-01-18 2026-05-27
CVE-2022-23302 json JMSSink in all versions of Log4j 1.x is vulnerable to deserialization of untrusted data when the attacker has write access to... Not Provided 2022-01-18 2026-05-22
CVE-2021-45105 json Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion fro... Not Provided 2021-12-18 2026-05-29
CVE-2021-4104 json JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j c... Not Provided 2021-12-14 2026-05-28
Results limited to 10 most recent vulnerabilities
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report