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Apache Log4net: Silent Log Event Loss In XmlLayout And XmlLayoutSchemaLog4J Due To Unescaped XML 1.0 Forbidden Character
🗓️ 18 Apr 2026 05:09:36Reported by Veracode Vulnerability DatabaseType 
veracode🔗 sca.analysiscenter.veracode.com👁 5 Views
| Reporter | Title | Published | Views | Family All 18 |
|---|---|---|---|---|
 | CVE-2026-40021 | 10 Apr 202615:44 | – | attackerkb |
 | Apache log4net 安全漏洞 | 10 Apr 202600:00 | – | cnnvd |
 | CVE-2026-40021 | 10 Apr 202615:44 | – | cve |
 | CVE-2026-40021 Apache Log4net: Silent log event loss in XmlLayout and XmlLayoutSchemaLog4J due to unescaped XML 1.0 forbidden characters | 10 Apr 202615:44 | – | cvelist |
 | CVE-2026-40021 | 10 Apr 202615:44 | – | debiancve |
 | EUVD-2026-21488 | 10 Apr 202618:31 | – | euvd |
 | Apache Log4net: Silent log event loss in XmlLayout and XmlLayoutSchemaLog4J due to unescaped XML 1.0 forbidden characters | 10 Apr 202618:31 | – | github |
 | CVE-2026-40021 | 10 Apr 202616:16 | – | nvd |
 | DEBIAN-CVE-2026-40021 | 10 Apr 202616:16 | – | osv |
| GHSA-4F7C-PMJV-C25W Apache Log4net: Silent log event loss in XmlLayout and XmlLayoutSchemaLog4J due to unescaped XML 1.0 forbidden characters | 10 Apr 202618:31 | – | osv |
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30 May 2026 08:20Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.3
CVSS 46.3
EPSS0.00285
SSVC