Medium5.3Red Hat & Ubuntu Linux
Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping
CVE-2026-34479 Published Apr 10, 2026
CVE-2026-34479
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-91. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:21773 — update the affected packages (`sudo dnf update`).
Affected versions
- offline-knowledge-portal/rhokp-rhel9:1779996999
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Fixed versions
- RHSA-2026:21773
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:21773 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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