High8.8Red Hat Linux

High [CVE-2026-20664] Processing maliciously crafted web content may lead to an unexpected process crash

This high-severity Red Hat Linux advisory covers CVE-2026-20664 affecting Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

CVE-2026-20664 Published Mar 28, 2026

CVE-2026-20664

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 alerts See app features

Summary

Processing maliciously crafted web content may lead to an unexpected process crash. Red Hat rates this important (CVSS 8.8).

Weakness: CWE-120. Affected package(s): webkit2gtk3, webkitgtk4.

Resolved in Red Hat advisory RHSA-2026:19206 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 8 more.

Affected versions

webkit2gtk3-0:2.52.3-1.el8_8
webkit2gtk3-0:2.52.3-1.el9_6
webkit2gtk3-0:2.52.3-1.el8_6
webkitgtk4-0:2.52.3-1.el7_9
webkit2gtk3-0:2.52.3-0.el9_7.1
webkit2gtk3-0:2.52.3-1.el9_4
webkit2gtk3-0:2.52.3-1.el8_10
webkit2gtk3-0:2.52.3-1.el8_4
webkit2gtk3-0:2.52.3-1.el9_2
webkit2gtk3-0:2.52.3-1.el9_0
webkit2gtk3-0:2.52.3-1.el9_8

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

Fixed versions

RHSA-2026:19206

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-2026:19206 (`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.