Apache Log4j API: Improper serialization of non-finite floating-point values in MapMessage.asJson()

Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON. This issue affects Apache Log4j API versions 2.13.1 through 2.25.4 and version 2.26.0. The fix for CVE-2026-34481 did not cover all code paths: wh...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to improper encoding in Apache Log4j [CVE-2026-49844]

Summary IBM Watson Speech Services Cartridge is vulnerable to Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API, which produces output that is not valid JSON CVE-2026-49844. Apache Log4j is included in our speech microservices. This...

GHSA-QV9R-C865-CP47 Apache Log4j API: Improper encoding of non-finite floating-point values during MapMessage JSON serialization

Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON. This issue affects Apache Log4j API versions 2.13.1 through 2.25.4 and version 2.26.0. The fix for CVE-2026-34481 did not cover all code paths: wh...

CVE-2026-49844: Improper Encoding or Escaping of Output

Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON. This issue affects Apache Log4j API versions 2.13.1 through 2.25.4 and version 2.26.0. The fix for CVE-2026-34481 did not cover all code paths: wh...

CVE-2026-34481: Improper Encoding or Escaping of Output

Apache Log4j's JsonTemplateLayout https://logging.apache.org/log4j/2.x/manual/json-template-layout.html , in versions up to and including 2.25.3, produces invalid JSON output when log events contain non-finite floating-point values NaN, Infinity, or -Infinity, which are prohibited by RFC 8259. Th...