Exposure of System Data to an Unauthorized Control Sphere Affecting webkitgtk4-jsc package, versions <0:2.52.1-1.amzn2


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.28% (20th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2-WEBKITGTK4JSC-16341114
  • published2 May 2026
  • disclosed25 Mar 2026

Introduced: 25 Mar 2026

CVE-2026-20691  (opens in a new tab)
CWE-497  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 webkitgtk4-jsc to version 0:2.52.1-1.amzn2 or higher.
This issue was patched in ALAS2-2026-3270.

NVD Description

Note: Versions mentioned in the description apply only to the upstream webkitgtk4-jsc package and not the webkitgtk4-jsc package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

An authorization issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, watchOS 26.4. A maliciously crafted webpage may be able to fingerprint the user.

CVSS Base Scores

version 3.1