{"uuid": "02b4c40d-f125-4bd5-ba51-37ae4b6dd599", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-44228", "type": "exploited", "source": "https://t.me/cissp/4953", "content": "How to Mitigate CVE-2021-44228\n\nTo mitigate the following options are available (see the advisory from Apache here):\n\n1. Upgrade to Log4j v2.15.0\n\n2. If you are using Log4j v2.10 or above, and cannot upgrade, then set the property:\n\nlog4j2.formatMsgNoLookups=true\n\nAdditionally, an environment variable can be set for these same affected versions:\n\nLOG4J_FORMAT_MSG_NO_LOOKUPS=true\n\n3. Or remove the JndiLookup class from the classpath. For example, you can run a command like\n\nzip -q -d log4j-core-*.jar org/apache/logging/log4j/core/lookup/JndiLookup.class\nto remove the class from the log4j-core", "creation_timestamp": "2026-09-11T00:00:39.832040Z"}