MODERATEMaven →
Apache Log4j JSON Template Layout: Improper serialization of non-finite floating-point values in JsonTemplateLayout
Apache Log4j JSON Template Layout: Improper serialization of non-finite floating-point values in JsonTemplateLayout
Affected packages
- org.apache.logging.log4j:log4j-layout-template-json— 2.14.0 → 2.25.4
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://nvd.nist.gov/vuln/detail/CVE-2026-34481
- https://github.com/apache/logging-log4j2/pull/4080
- https://github.com/apache/logging-log4j2
- https://lists.apache.org/thread/n34zdv00gbkdbzt2rx9rf5mqz6lhopcv
- https://logging.apache.org/cyclonedx/vdr.xml
- https://logging.apache.org/log4j/2.x/manual/json-template-layout.html
- https://logging.apache.org/security.html#CVE-2026-34481
- http://www.openwall.com/lists/oss-security/2026/04/10/10
Structured record: https://osv.dev/vulnerability/GHSA-w35j-pv5h-q9q9
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