High7.6Vendor: MediumRed Hat & Ubuntu Linux
Denial of Service via crafted OOXML documents
CVE-2026-4430 Published May 7, 2026
CVE-2026-4430
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Denial of Service via crafted OOXML documents. Red Hat rates this moderate (CVSS 7.6). Weakness: CWE-787. Affected package(s): libreoffice. Resolved in Red Hat advisory RHSA-2026:28922 — update the affected packages (`sudo dnf update`).
Affected versions
- libreoffice-1:7.1.8.1-15.el9_8.1
- libreoffice-1:6.4.7.2-20.el8_10
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Fixed versions
- RHSA-2026:28922
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-2026:28922 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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