Should you update to Safari 26.5.2?
No: install Safari 26.6.1 instead. Safari 26.5.2 is a security update Apple released on 29 Jun 2026 for Mac. It fixes 31 security flaws.[1] None of them is known to be used in attacks.
It has since been replaced by Safari 26.6, released 27 Jul 2026, which includes all of its fixes. If you’re on an older version, install that instead.
Should you update?
No: install Safari 26.6.1 instead. Safari 26.6.1 came out on 18 Aug 2026 and includes every fix in Safari 26.5.2, so there’s no reason to stop at this one. Software Update offers the newest version your Mac can run.
Is Safari 26.5.2 still safe?
Not any more. The 2 updates since, up to Safari 26.6.1, fix 33 security flaws that Safari 26.5.2 doesn’t, and each became public the day its fix shipped. Installing it is safe: get it only from System Settings → General → Software Update, never from a link in an email, text or pop-up.
What it fixes
Apple lists 31 security flaws across 5 parts of Safari. For each, Apple says what an attacker could have done before the fix.[1]
| Part | Flaws | What an attacker could do |
|---|---|---|
| WebKit | 24 | Processing maliciously crafted web content may disclose sensitive user information |
| WebRTC | 4 | Processing maliciously crafted web content may lead to an unexpected process crash |
| Web Extensions | 1 | A malicious web extension may be able to cause an unexpected process crash |
| WebKit Canvas | 1 | Processing maliciously crafted web content may lead to an unexpected Safari crash |
| WebKit Storage | 1 | A malicious website may be able to silently hijack clipboard data |
How to update, and how long it takes
Usually a few minutes on its own, or as part of a macOS update. Quit Safari first.
- Back up first if you can.iCloud backup or your computer. Updates rarely go wrong, but a backup makes it painless if one does.
- Open Apple menu → System Settings → General → Software Update (Safari updates come with macOS, or on their own for older Macs).Your Mac shows the newest version it can run. Tap or click Update Now, or Upgrade Now for a new major version.
- Leave it plugged in.It downloads, prepares and restarts. Expect 15 to 45 minutes.
- Turn on automatic updates.In the same place, under Automatic Updates, turn on both downloading and installing security responses and updates.
To check it worked: Safari → About Safari shows the version. It should say 26.6 or later.
Before and after
- After: Safari 26.6, 27 Jul 2026, 10 security flaws
- Safari updates, every release and the latest version
- Updates, the latest version of everything HARD tracks
References
- ^ Apple. “About the security content of Safari 26.5.2”, 29 Jun 2026.