High8.8Red Hat & Ubuntu Linux
Arbitrary code execution via heap buffer overflow in WebML
CVE-2026-5858 Published Apr 8, 2026
CVE-2026-5858
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Arbitrary code execution via heap buffer overflow in WebML. Red Hat rates this important (CVSS 8.8). Weakness: CWE-131. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released.
Mitigation checklist
Recommended fix / mitigation
- Red Hat rates this important; a fix erratum may not be out yet — apply the RHSA as soon as it publishes.
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
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