CVE-2026-28971

WebKit: A malicious iframe may use another website’s download settings

CVE-2026-28971 is fixed in Tahoe on 1 platform by Tahoe 26.5 (version 26.5), released May 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

4.3

MEDIUM

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0030

22nd percentile

The issue was addressed with improved UI handling. WebKit Bugzilla: 311288

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Tahoe	26.5	Tahoe 26.5	May 11, 2026

Details

Published
May 11, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Vendor advisory
https://support.apple.com/en-us/127115

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