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CVE-2026-40023 Apache Log4cxx, Apache Log4cxx (Conan), Apache Log4cxx (Brew): Silent log event loss in XMLLayout due to unescaped XML 1.0 forbidden characters

🗓️ 10 Apr 2026 15:45:52Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 2 Views

Silent log loss from unescaped XML 1.0 characters in XMLLayout before 1.7.0; upgrade to 1.7.0.

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15 Jul 2026 01:49Current
5.9Medium risk
Vulners AI Score5.9
CVSS 46.3
EPSS0.00499
2