# CVE-2026-112666: Apple Safari use-after-free in WebKit

Source: https://junglewise.ai/threats/cve-2026-112666-a-use-after-free-issue-was-addressed-with-improved-memory  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-26. Updated: 2026-10-26  
License: CC BY 4.0 with a link back

CVE-2026-112666 · Severity: info · Published 2026-10-26

Safari web browser contains a use-after-free memory bug that can be triggered when processing maliciously crafted web content. An attacker can cause the browser to crash unexpectedly, disrupting the user's browsing session.

Technologies: [Apple Safari](https://junglewise.ai/threats/technologies/safari). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple).

## Quick answers

**Is CVE-2026-112666 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-112666 being exploited in the wild.

**How severe is CVE-2026-112666?** Informational severity, published 26 October 2026.

**Which products and versions are affected?** Apple Safari before 27.2.

**Is there a fix for CVE-2026-112666?** Yes: fixed in Safari 27.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-112666 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-112666?** Check whether you run Apple Safari 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.

## How to fix

- Fixed in Safari 27.2

## Technical details

A use-after-free vulnerability in Safari's WebKit engine allows an attacker to trigger unexpected process termination by processing maliciously crafted web content. The vulnerability requires network-based delivery of the malicious content (user visits a compromised or attacker-controlled website). The fix involves improved memory management to prevent the memory from being accessed after it has been freed.

## Affected products

- Apple Safari before 27.2

## Timeline

- 2026-10-26: disclosed

## References

- [https://support.apple.com/en-us/149230](https://support.apple.com/en-us/149230)
- [https://support.apple.com/en-us/149521](https://support.apple.com/en-us/149521)

## Related threats

- [Apple iOS, iPadOS, macOS, Safari, tvOS, watchOS pointer authentication bypass](https://junglewise.ai/threats/cve-2024-27834-apple-multiple-products-improper-authentication-vulnerability)
- [Safari use-after-free in memory management](https://junglewise.ai/threats/cve-2026-86986-a-use-after-free-issue-was-addressed-with-improved-memory)
- [Apple Safari input validation vulnerability](https://junglewise.ai/threats/cve-2026-86985-this-issue-was-addressed-with-improved-input-validation-this)
- [Apple Safari and OS type confusion in WebContent processing](https://junglewise.ai/threats/cve-2026-86974-a-type-confusion-issue-was-addressed-with-improved-checks-this)
- [Apple Safari out-of-bounds read in web content processing](https://junglewise.ai/threats/cve-2026-86973-an-out-of-bounds-read-was-addressed-with-improved-bounds-checking)