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Threats Tagged 'cve-2026-49844'

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Threats Tagged 'cve-2026-49844'

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CVE-2026-49844: CWE-116 Improper Encoding or Escaping of Output in Apache Software Foundation Apache Log4j APICVE-2026-49844
0

CVE-2026-49844 is a medium severity vulnerability in Apache Log4j API affecting versions 2.13.1 through 2.25.4, 2.26.0, and 3.0.0-alpha1. It involves improper encoding of non-finite floating-point values (NaN, Infinity, -Infinity) during MapMessage JSON serialization, resulting in output that is not valid JSON. This can cause malformed log entries and disrupt downstream log processing when using certain JSON layouts. Users are advised to upgrade to versions 2.25.5 or 2.26.1 which produce RFC 8259-compliant JSON for these values.

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