Medium5.3Red Hat Linux

Medium [CVE-2026-4271] Denial of Service via Use-After-Free in HTTP/2 server

This medium-severity Red Hat Linux advisory covers CVE-2026-4271 affecting Red Hat Enterprise Linux 1, libsoup3.

CVE-2026-4271 Published Mar 16, 2026

CVE-2026-4271

Affected products & platforms

Red Hat LinuxUnclassified

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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 products named by the advisory: Red Hat Enterprise Linux 1.

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 2 months ago·verify at source

Fixed versions

RHSA-2026:17482

Official advisory · high-confidence parse· fetched 2 months 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 2 months ago·verify at source

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