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Vulnerability disclosure

WebKit data-protection flaw exposes sensitive user data

CVE-2026-28958

Affected product
WebKit
Severity
Medium
CVSS
5.5
Weakness
CWE-200
Published

Disclosure summary

CVE-2026-28958 is a medium-severity CWE-200 vulnerability in WebKit. WebKit data-protection flaw exposes sensitive user data. Cantina reproduced the behavior, verified its security impact, and coordinated disclosure with the affected maintainer.

Verification standard

Cantina publishes a disclosure only after reproducing the behavior, validating its security impact, and coordinating remediation with the affected project.