CVE-2026-43704

Web Extensions: A malicious web extension may be able to cause an unexpected process crash

CVE-2026-43704 is fixed in Tahoe on 1 platform by Tahoe 26.5.2 (version 26.5.2), released June 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.3

MEDIUM

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0039

33rd percentile

A use-after-free issue was addressed with improved memory management. WebKit Bugzilla: 314642

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Tahoe	26.5.2	Tahoe 26.5.2	Jun 29, 2026

Details

Published
June 29, 2026
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Vendor advisory
https://support.apple.com/en-us/127595

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