CVE-2026-34481

216.73.216.215

· Published 10/04/2026 16:16 · Modified 10/04/2026 17:17

Labels: CVE-2026-34481 2026-04-10 CVE-2026-34481 CWE-116 [email protected]

Essential information

Published: 10/04/2026 16:16
Modified: 10/04/2026 17:17
Author: —
Creator: —
CVSS: 6.3 MEDIUM (v3) 6.3 MEDIUM (v4.0)
CISA KEV: No
CWE: —
CVSS vector: —

CVSS metrics

Description

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. This may cause downstream log processing systems to reject or fail to index affected records. An attacker can exploit this issue only if both of the following conditions are met: * The application uses JsonTemplateLayout. * The application logs a MapMessage containing an attacker-controlled floating-point value. Users are advised to upgrade to Apache Log4j JSON Template Layout 2.25.4, which corrects this issue.

NVD status

Status: Received — CVE has been recently published to the CVE List and has been received by the NVD.
Source: [email protected]
NVD: View on NVD

Affected products (CPE)

Product	CPE
apache / log4j	`cpe:2.3:a:apache:log4j:2.25.0-2.25.3:::::::*`
apache / log4j	`cpe:2.3:a:apache:log4j:2.25.4:::::::*`