Medium5.3Red Hat & Ubuntu Linux
Denial of Service via Use-After-Free in HTTP/2 server
CVE-2026-4271 Published Mar 16, 2026
CVE-2026-4271
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Denial of Service via Use-After-Free in HTTP/2 server. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-416. Affected package(s): libsoup3. Resolved in Red Hat advisory RHSA-2026:17482 — update the affected packages (`sudo dnf update`).
Affected versions
- libsoup3-0:3.6.5-3.el10_1.11
- libsoup3-0:3.6.5-3.el10_2.11
- libsoup3-0:3.6.5-3.el10_0.15
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
Fixed versions
- RHSA-2026:17482
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:17482 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
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