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Apache log4j: Mehrere Schwachstellen ermöglichen Manipulation von Dateien
view advisory published 2026-04-12
Ein Angreifer kann mehrere Schwachstellen in Apache log4j ausnutzen, um Dateien zu manipulieren.
01
describes (5)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-34481US | high7.5 | — | ||
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… | ||||
| CVE-2026-34480US | high7.5 | — | ||
Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.html#XmlLayout , in versions up to and including 2.25.3, fails to sanitize characters forbidden b… | ||||
| CVE-2026-34479US | high7.5 | — | ||
The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, producing malformed XML output. Conforming XML parsers a… | ||||
| CVE-2026-34478US | high7.5 | — | ||
Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.html#RFC5424Layout , in versions 2.21.0 through 2.25.3, is vulnerable to log injection via CR… | ||||
| CVE-2026-34477US | medium5.9 | — | ||
The fix for CVE-2025-68161 https://logging.apache.org/security.html#CVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyH… | ||||
02
references
External citations — patches, advisories, analysis.
- Red Hat Security Advisory RHSA-2026:21773 vom 2026-05-29external
- Red Hat Security Advisory RHSA-2026:22619 vom 2026-06-02external
- Red Hat Security Advisory RHSA-2026:34608 vom 2026-07-02external
- Red Hat Security Advisory RHSA-2026:37390 vom 2026-07-09external
- Red Hat Security Advisory RHSA-2026:42644 vom 2026-07-21external
- Red Hat Security Advisory RHSA-2026:54435 vom 2026-08-12external
- Red Hat Security Advisory RHSA-2026:66488 vom 2026-09-10external
- Red Hat Security Advisory RHSA-2026:66545 vom 2026-09-11external
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