Skip to content
VulniPulse
Sign in
High7.5Red Hat Linux

High [CVE-2026-21710] Denial of Service due to crafted HTTP `__proto__` header

This high-severity Red Hat Linux advisory covers CVE-2026-21710 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.4 Extended Update Support.

CVE-2026-21710 Published Mar 30, 2026
CVE-2026-21710
Affected products & platforms
Red Hat LinuxUnclassified
Open vendor advisory

Android app · Google Play

Monitor future Red Hat Linux CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery
Get CVE alertsSee app features

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 products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support.

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 2 months ago·verify at source

Fixed versions
  • RHSA-2026:7350

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-2026:7350 (`sudo dnf update` / `yum update`).

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

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.

Sign in to join the discussion.