Vulnerability Description
This issue was addressed through improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. Processing maliciously crafted web content may prevent Content Security Policy from being enforced.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Safari | < 26.4 |
| Apple | Ipados | < 18.7.7 |
| Apple | Iphone Os | < 18.7.7 |
| Apple | Macos | < 26.4 |
| Apple | Tvos | < 26.4 |
| Apple | Visionos | < 26.4 |
| Apple | Watchos | < 26.4 |
Related Weaknesses (CWE)
References
- https://support.apple.com/en-us/126792Release NotesVendor Advisory
- https://support.apple.com/en-us/126793Release NotesVendor Advisory
- https://support.apple.com/en-us/126794Release NotesVendor Advisory
- https://support.apple.com/en-us/126797Release NotesVendor Advisory
- https://support.apple.com/en-us/126798Release NotesVendor Advisory
- https://support.apple.com/en-us/126799Release NotesVendor Advisory
- https://support.apple.com/en-us/126800Release NotesVendor Advisory
FAQ
What is CVE-2026-20665?
CVE-2026-20665 is a vulnerability with a CVSS score of 6.5 (MEDIUM). This issue was addressed through improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watc...
How severe is CVE-2026-20665?
CVE-2026-20665 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-20665?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Safari, Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos.