High7.5Red Hat & Ubuntu Linux
Denial of Service due to crafted HTTP `__proto__` header
CVE-2026-21710 Published Mar 30, 2026
CVE-2026-21710
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Denial of Service due to crafted HTTP `__proto__` header. Red Hat rates this important (CVSS 7.5). Weakness: CWE-843. Affected package(s): nodejs:20, nodejs:22, nodejs22, nodejs24, nodejs:24. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`).
Affected versions
- nodejs:20-9070020260409073121.rhel9
- nodejs:22-9060020260409121057.rhel9
- nodejs:20-8100020260414073138.489197e6
- nodejs:22-9070020260401095228.rhel9
- nodejs22-1:22.22.2-2.el10_0
- nodejs:20-9060020260422064119.rhel9
- nodejs22-1:22.22.2-1.el10_1
- nodejs24-1:24.14.1-2.el10_1
- nodejs:24-8100020260408131901.6d880403
- nodejs:24-9070020260402152654.rhel9
- nodejs:20-9040020260421133644.rhel9
- nodejs:22-8100020260331102257.6d880403
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Fixed versions
- RHSA-2026:7350
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-2026:7350 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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