{"id":"RHLW-2026-97a6348484d7bbf1","summary":"Lightwell Security Advisory: log4j-core 2.24.3.rhlw-00004","details":"Red Hat Lightwell has released org.apache.logging.log4j:log4j-core 2.24.3.rhlw-00004 with backported fixes for CVE-2025-68161, CVE-2026-34477, CVE-2026-34478, and CVE-2026-34480.\n\nCVE-2025-68161: Apache Log4j Core: Missing TLS hostname verification in Socket appender\n\nCVE-2026-34477: Apache Log4j Core: verifyHostName attribute silently ignored in TLS configuration, allowing hostname verification bypass\n\nCVE-2026-34478: Apache Log4j Core: Log injection in Rfc5424Layout due to silent configuration incompatibility\n\nCVE-2026-34480: Apache Log4j Core: Silent log event loss in XmlLayout due to unescaped XML 1.0 forbidden characters\n\nThis patched artifact is a drop-in replacement for org.apache.logging.log4j:log4j-core 2.24.3 from Maven Central.","modified":"2026-10-22T00:08:18.398897040Z","published":"2026-10-12T19:52:23Z","upstream":["CVE-2025-68161","CVE-2026-34477","CVE-2026-34478","CVE-2026-34480","GHSA-3pxv-7cmr-fjr4","GHSA-445c-vh5m-36rj","GHSA-6hg6-v5c8-fphq","GHSA-vc5p-v9hr-52mj"],"references":[{"type":"WEB","url":"https://logging.apache.org/log4j/2.x/manual/appenders/network.html#SslConfiguration-attr-verifyHostName"},{"type":"WEB","url":"https://logging.apache.org/log4j/2.x/manual/systemproperties.html#log4j2.sslVerifyHostName"},{"type":"WEB","url":"https://repo.maven.apache.org/maven2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68161.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/xr33kyxq3sl67lwb61ggvm1fzc8k7dvx"},{"type":"ADVISORY","url":"https://logging.apache.org/cyclonedx/vdr.xml"},{"type":"ADVISORY","url":"https://logging.apache.org/security.html#CVE-2025-68161"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68161"},{"type":"FIX","url":"https://github.com/apache/logging-log4j2/pull/4002"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-vc5p-v9hr-52mj"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34477.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/lkx8cl46t2bvkcwfcb2pd43ygc097lq4"},{"type":"ADVISORY","url":"https://logging.apache.org/security.html#CVE-2026-34477"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34477"},{"type":"FIX","url":"https://github.com/apache/logging-log4j2/pull/4075"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-6hg6-v5c8-fphq"},{"type":"WEB","url":"https://logging.apache.org/log4j/2.x/manual/layouts.html#RFC5424Layout"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34478.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/3k1clr2l6vkdnl4cbhjrnt1nyjvb5gwt"},{"type":"ADVISORY","url":"https://logging.apache.org/security.html#CVE-2026-34478"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34478"},{"type":"FIX","url":"https://github.com/apache/logging-log4j2/pull/4074"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-445c-vh5m-36rj"},{"type":"WEB","url":"https://logging.apache.org/log4j/2.x/manual/layouts.html#XmlLayout"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34480.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/5x0hcnng0chhghp6jgjdp3qmbbhfjzhb"},{"type":"ADVISORY","url":"https://logging.apache.org/security.html#CVE-2026-34480"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34480"},{"type":"FIX","url":"https://github.com/apache/logging-log4j2/pull/4077"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-3pxv-7cmr-fjr4"}],"affected":[{"package":{"name":"org.apache.logging.log4j:log4j-core","ecosystem":"Red Hat Lightwell:Maven","purl":"pkg:maven/org.apache.logging.log4j/log4j-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.24.3.rhlw-00004"}]}],"versions":["2.0","2.0-alpha1","2.0-alpha2","2.0-beta1","2.0-beta2","2.0-beta3","2.0-beta4","2.0-beta5","2.0-beta6","2.0-beta7","2.0-beta8","2.0-beta9","2.0-rc1","2.0-rc2","2.0.1","2.0.2","2.1","2.10.0","2.11.0","2.11.1","2.11.2","2.12.0","2.12.1","2.12.2","2.12.3","2.12.4","2.13.0","2.13.1","2.13.2","2.13.3","2.14.0","2.14.1","2.15.0","2.16.0","2.17.0","2.17.1","2.17.2","2.18.0","2.19.0","2.2","2.20.0","2.21.0","2.21.1","2.22.0","2.22.1","2.23.0","2.23.1","2.24.0","2.24.1","2.24.2","2.24.3","2.3","2.3.1","2.3.2","2.4","2.4.1","2.5","2.6","2.6.1","2.6.2","2.7","2.8","2.8.1","2.8.2","2.9.0","2.9.1"],"database_specific":{"lightwell":{"repository_url":"https://packages.redhat.com/lightwell/java/remediated/","backport_base_version":"2.24.3","remediated_version":"2.24.3.rhlw-00004"},"source":"https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-97a6348484d7bbf1.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"}],"credits":[{"name":"Red Hat Lightwell","type":"REMEDIATION_DEVELOPER"}]}