What is CVE-2026-34480?

CVE-2026-34480 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Apache Log4j Core: Silent log event loss in XmlLayout due to unescaped XML 1.0 forbidden characters

Which CVE IDs does CVE-2026-34480 cover?

CVE-2026-34480 covers the following CVE IDs: CVE-2026-34480. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

CVE-2026-34480Medium

Apache Log4j Core: Silent log event loss in XmlLayout due to unescaped XML 1.0 forbidden characters

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-34480 →