Safari 26.5 Security Update

What Safari 26.5 Fixes

Safari 26.5, released May 13, 2026, fixes 23 vulnerabilities in 2 parts of the system, according to Apple's security advisory.

Apple does not say that any of them were exploited before the fix. That makes Safari 26.5 a routine security update: worth installing soon, not an emergency.

It has since been superseded: the newest security release for Safari is Safari 27.2, from October 26, 2026, which includes these fixes.

Grouped by us from the impact Apple gives for each fix; the impact lines below are Apple's own.

Which Devices Get Safari 26.5

Apple lists Safari 26.5 for: macOS Sonoma and macOS Sequoia.

How to Install Safari 26.5

Safari updates arrive through Software Update on the Mac. On a current macOS they are part of the macOS update; on older versions they are offered separately.

Security fixes are cumulative: any later release for the same version includes these as well, so if you are already past Safari 26.5 there is nothing to do.

Every Fix in Safari 26.5

All 23 CVEs in Apple's advisory, the most serious kinds first. Each entry is the part of the system affected, Apple's description of the impact and the fix, and the CVE ID.

• WebKit

  Processing maliciously crafted web content may disclose sensitive user information

  This issue was addressed with improved access restrictions.

  CVE-2026-28962

• WebKit

  An app may be able to access sensitive user data

  This issue was addressed with improved data protection.

  CVE-2026-28958

• WebKit

  Processing maliciously crafted web content may bypass Content Security Policy

  A Content Security Policy bypass was addressed with improved enforcement in AudioWorklet contexts.

  CVE-2026-43670

• WebKit

  Processing maliciously crafted web content may lead to an unexpected Safari crash

  The issue was addressed with improved memory handling.

  CVE-2026-43658 CVE-2026-28984

• WebKit

  Processing maliciously crafted web content may lead to an unexpected process crash

  The issue was addressed with improved memory handling.

  CVE-2026-28905 CVE-2026-28847 CVE-2026-28904 CVE-2026-28955 CVE-2026-28903 CVE-2026-28953 CVE-2026-28902 CVE-2026-28901 CVE-2026-28913

• WebKit

  Processing maliciously crafted web content may lead to an unexpected process crash

  A use-after-free issue was addressed with improved memory management.

  CVE-2026-28883

• WebKit

  Processing maliciously crafted web content may lead to an unexpected process crash

  The issue was addressed with improved input validation.

  CVE-2026-28917

• WebKit

  Processing maliciously crafted web content may lead to an unexpected Safari crash

  A use-after-free issue was addressed with improved memory management.

  CVE-2026-28947 CVE-2026-28946 CVE-2026-28942

• WebRTC

  Processing maliciously crafted web content may lead to an unexpected process crash

  The issue was addressed with improved memory handling.

  CVE-2026-28944

• WebKit

  Processing maliciously crafted web content may prevent Content Security Policy from being enforced

  A validation issue was addressed with improved logic.

  CVE-2026-43660

• WebKit

  Processing maliciously crafted web content may prevent Content Security Policy from being enforced

  The issue was addressed with improved input validation.

  CVE-2026-28907

• WebKit

  A malicious iframe may use another website’s download settings

  The issue was addressed with improved UI handling.

  CVE-2026-28971

Safari Security Release History

Safari 26.5 in context: the security releases Apple has published for Safari, newest first, with the number of fixes each carried.

The Same Fixes Elsewhere

Apple ships most fixes to every platform that shares the code, and to older versions still under support. These releases close at least one of the same CVEs:

Frequently Asked Questions