GHSA-4f7c-pmjv-c25wPublished
Apache Log4net: Silent log event loss in XmlLayout and XmlLayoutSchemaLog4J due to unescaped XML 1.0 forbidden characters
Exact source revision recorded 23 Oct 2026 16:01:25 UTC. It does not establish the source's current position. Latest evidence.
Explicit identifiers and source references
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CVE-2026-40021 · Microsoft / collected KEV context
osv · GHSA-4f7c-pmjv-c25w
- https://nvd.nist.gov/vuln/detail/CVE-2026-40021
- https://github.com/apache/logging-log4net/pull/280
- https://github.com/apache/logging-log4net
- https://lists.apache.org/thread/q8otftjswhk69n3kxslqg7cobr0x4st7
- https://logging.apache.org/cyclonedx/vdr.xml
- https://logging.apache.org/log4net/manual/configuration/layouts.html
- https://logging.apache.org/security.html#CVE-2026-40021
- http://www.openwall.com/lists/oss-security/2026/04/10/11
Current operational correlations are not mixed into this historical source record. Open latest evidence to discover current connections.