CVE-2026-49844
1 advisory.
Maven/org.apache.logging.log4j:log4j-api CVE-2026-49844: medium
Apache Log4j API: Improper encoding of non-finite floating-point values during MapMessage JSON serialization
Action: Upgrade org.apache.logging.log4j:log4j-api to 2.25.5 (2.25.x) or 2.26.1 (2.26.x) or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 2.13.1 | 2.25.5 | - |
| 2.26.0 | 2.26.1 | - |
Fixed versions
| 2.25.5 | 2.26.1 |
Sources
- osv: GHSA-qv9r-c865-cp47
- https://nvd.nist.gov/vuln/detail/CVE-2026-49844
- https://github.com/apache/logging-log4j2/pull/4163
- https://github.com/apache/logging-log4j2/commit/19edb23e162d6c728a8c2221a240037d389ed300
- https://github.com/apache/logging-log4j2/commit/feadf8eb0b4acb6ddfa4c0ab2bbc6d88b8e12d82
- https://github.com/apache/logging-log4j2
- https://github.com/apache/logging-log4j2/releases/tag/rel/2.25.5
- https://github.com/apache/logging-log4j2/releases/tag/rel/2.26.1
- https://logging.apache.org/cyclonedx/vdr.xml
- https://logging.apache.org/log4j/2.x/manual/json-template-layout.html#event-template-resolver-message
- https://logging.apache.org/security.html#CVE-2026-49844
CVE-2026-49844 · published · modified · JSON