THE content discusses CVE-2026-49844, a security flaw in Apache Log4j affecting multiple versions (2.13.1, 2.26.0, and 3.0.0-alpha1). This vulnerability allows improper serialization of non-finite floating-point numbers in JSON output, which can disrupt log pipelines, potentially hiding malicious activities. It has a CVSS score of 6.3 (Medium) and has not yet been exploited in the wild. Patch versions are 2.25.5 and 2.26.1, which address the issue. The major recommendation is to update to these patched versions immediately.
Apache Log4j CVE-2026-49844 flaw can hide attacks via JSON logs.
CyberSIXT Evidence Panel
Article by CyberSIXT