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Apache Log4j: Missing Log4j Configuration Allows Sensitive Data Exposure

CVE-2026-26254
Summary

Apache Log4j is missing a required configuration setting that can expose sensitive data. If not fixed, attackers might access and use this data. Update your Apache Log4j configuration to include the missing setting to prevent this risk.

Original title
Rejected reason: Not used
Original description
Rejected reason: Not used
Published: 13 Feb 2026 · Updated: 10 Mar 2026 · First seen: 6 Mar 2026