Is CVE-2026-86898 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-86898 being exploited in the wild.

How severe is CVE-2026-86898?

Medium severity, with a CVSS score of 5.4, published 14 September 2026.

Which products and versions are affected?

Apple iPadOS before 27; Apple macOS Golden Gate before 27; Apple Safari before 27; Apple Visionos before 27.

Is there a fix for CVE-2026-86898?

A patch was published on 2026-09-14: Safari 27, iOS 27, iPadOS 27, macOS Golden Gate 27, visionOS 27 released with fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Am I affected by CVE-2026-86898?

Check whether you run Apple iPadOS, Apple Iphone Os, Apple macOS or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-86898: Apple Safari universal cross-site scripting in webarchive handling

CVE-2026-86898 · Severity: medium · CVSS 5.4 · Published 2026-09-14

Safari is Apple's web browser used to browse the internet on iPhones, iPads, and Macs. A logic flaw in how Safari handles maliciously crafted webarchive files can allow attackers to inject malicious scripts that bypass security protections and execute arbitrary code in the context of any website, potentially stealing user credentials, financial data, or session information.

Technologies: Apple iPadOS, Apple Iphone Os, Apple macOS, Apple macOS Golden Gate, Apple Safari, Apple Visionos. Vendors: Apple.

Quick answers

Is CVE-2026-86898 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-86898 being exploited in the wild.
How severe is CVE-2026-86898?: Medium severity, with a CVSS score of 5.4, published 14 September 2026.
Which products and versions are affected?: Apple iPadOS before 27; Apple macOS Golden Gate before 27; Apple Safari before 27; Apple Visionos before 27.
Is there a fix for CVE-2026-86898?: A patch was published on 2026-09-14: Safari 27, iOS 27, iPadOS 27, macOS Golden Gate 27, visionOS 27 released with fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-86898?: Check whether you run Apple iPadOS, Apple Iphone Os, Apple macOS or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A logic issue in Safari's webarchive file processing fails to properly validate state management when opening specially crafted webarchive files. This permits universal cross-site scripting (UXSS), where an attacker can inject JavaScript that executes in the origin context of arbitrary websites, bypassing the same-origin policy. The vulnerability is triggered when a user opens a malicious webarchive file, with no additional user interaction or authentication required beyond the file open action. Exploitation allows an attacker to read sensitive data from visited websites, modify page content, steal session tokens, or perform actions on behalf of the user. Patches are available in Safari 27, iOS 27, iPadOS 27, macOS Golden Gate 27, and visionOS 27 (all released September 14, 2026).

Affected products

Apple Safari before 27
Apple iOS before 27
Apple iPadOS before 27
Apple macOS Golden Gate before 27
Apple visionOS before 27

Timeline

2026-09-14: disclosed: CVE-2026-86898 disclosed; patches released simultaneously
2026-09-14: patched: Safari 27, iOS 27, iPadOS 27, macOS Golden Gate 27, visionOS 27 released with fix

References

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