Out-of-bounds Read Affecting webkit2gtk3-jsc package, versions <0:2.52.5-1.el9_6


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.36% (30th percentile)

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  • Snyk IDSNYK-RHEL9-WEBKIT2GTK3JSC-18768043
  • published14 Aug 2026
  • disclosed10 Jul 2026

Introduced: 10 Jul 2026

CVE-2026-43676  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:9 webkit2gtk3-jsc to version 0:2.52.5-1.el9_6 or higher.
This issue was patched in RHSA-2026:54572.

NVD Description

Note: Versions mentioned in the description apply only to the upstream webkit2gtk3-jsc package and not the webkit2gtk3-jsc package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

CVSS Base Scores

version 3.1