CVE-2026-33555
CVE-2026-33555: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium4.0
Medium [CVE-2026-33555] Request smuggling via HTTP/3 parser desynchronization
CVE-2026-33555Source published
Request smuggling via HTTP/3 parser desynchronization. Red Hat rates this moderate (CVSS 4). Weakness: CWE-130. Affected package(s): haproxy-main. Resolved in Red Hat advisory RHSA-2026:8749 — update the affected packages (`sudo dnf update`).
- Related products — impact not confirmed
- haproxy-main
- Red Hat Enterprise Linux
- Source-reported affected versions
- haproxy-main-3.0.19-1.1.hum1
- Source-reported fixed versions
- RHSA-2026:8749
- Mitigation guidance
- Update the affected package(s) to the fixed version shipped in RHSA-2026:8749 (`sudo dnf update` / `yum update`).
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