CVE intelligence and bounded remediation
CVE-2019-8649 — A logic issue existed in the handling of synchronous page loads
A logic issue existed in the handling of synchronous page loads. This issue was addressed with improved state management. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, iCloud for Windows 10.6. Processing maliciously crafted web content may lead to universal cross site scripting.
- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Published
- 2019-12-18
- CISA KEV
- Not currently listed
- Ecosystem
- apple/platform
- Weaknesses
- CWE-79
Affected products
- apple / icloud
- apple / itunes
- apple / safari
- apple / iphone_os
- apple / mac_os_x
- apple / tvos
Showing 6 representative product identities from 7 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.
Matched remediation archetype
Cross-site scripting and unsafe browser output
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
- Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
- Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.
Remediate safely
- Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
- Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
- Update affected rendering components and add tests for every output context using inert sentinel markup.
Authoritative sources
Complete CVE record and remediation plan
The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.