TI-2026-31792 Aliases CVE-2026-43700 GHSA-gc99-j9gc-r79x

Origin validation error in Apple Safari

LOW 28CWE-346Published 2026-06-29 · Updated 2026-08-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-346.

Summary

A cross-origin issue was addressed with improved tracking of security origins. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may disclose sensitive user information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00188 8th percentileScored 2026-11-07

Fix Fixed Safari (Apple): 26.5.2iOS and iPadOS (Apple): 18.7.10, 26.5.2+4 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apple	Safari	before 26.5.2	26.5.2	Patch available	CNA
Apple	iOS and iPadOS	before 18.7.10; before 26.5.2	18.7.10, 26.5.2	Patch available	CNA
Apple	macOS	before 26.5.2	26.5.2	Patch available	CNA
Apple	tvOS	before 26.6	26.6	Patch available	CNA
Apple	visionOS	before 26.6	26.6	Patch available	CNA
Apple	watchOS	before 26.6	26.6	Patch available	CNA

Safari VendorApple Affected before 26.5.2 Fixed in 26.5.2 Patch available CNA
iOS and iPadOS VendorApple Affected before 18.7.10; before 26.5.2 Fixed in 18.7.10, 26.5.2 Patch available CNA
macOS VendorApple Affected before 26.5.2 Fixed in 26.5.2 Patch available CNA
tvOS VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA
visionOS VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA
watchOS VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:a:apple:safari::::::::	before 26.5.2	Vulnerable	Apple
cpe:2.3:o:apple:ipados::::::::	before 26.5.2	Vulnerable	Apple
cpe:2.3:o:apple:iphone_os::::::::	before 26.5.2	Vulnerable	Apple
cpe:2.3:o:apple:macos::::::::	before 26.5.2	Vulnerable	Apple

cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 26.5.2 Vulnerable ·Apple
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 26.5.2 Vulnerable ·Apple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 26.5.2 Vulnerable ·Apple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 26.5.2 Vulnerable ·Apple

Remediation

Fix · CNA Safari (Apple) Fixed in 26.5.2
Fix · CNA iOS and iPadOS (Apple) Fixed in 18.7.10, 26.5.2
Fix · CNA macOS (Apple) Fixed in 26.5.2
Fix · CNA tvOS (Apple) Fixed in 26.6
Fix · CNA visionOS (Apple) Fixed in 26.6
Fix · CNA watchOS (Apple) Fixed in 26.6

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-06-29
Apple watchOS 26.6
34 records Highest priority Priority MEDIUM 4 MEDIUM, 30 LOW
Other records, highest priority first
- TI-2026-28748 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 46
- TI-2026-31807 Use after free in Apple SafariPriority MEDIUM 43
- TI-2026-31823 Use after free in Apple SafariPriority MEDIUM 40
Show all 34 records →
Release · 2026-06-29
Apple visionOS 26.6
32 records Highest priority Priority MEDIUM 4 MEDIUM, 28 LOW
Other records, highest priority first
- TI-2026-28748 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 46
- TI-2026-31807 Use after free in Apple SafariPriority MEDIUM 43
- TI-2026-31823 Use after free in Apple SafariPriority MEDIUM 40
Show all 32 records →

Show 3 more groups

Release · 2026-06-29
Apple tvOS 26.6
32 records Highest priority Priority MEDIUM 4 MEDIUM, 28 LOW
Other records, highest priority first
- TI-2026-28748 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 46
- TI-2026-31807 Use after free in Apple SafariPriority MEDIUM 43
- TI-2026-31823 Use after free in Apple SafariPriority MEDIUM 40
Show all 32 records →
Release · 2026-06-29
Apple Safari, macOS 26.5.2
31 records Highest priority Priority MEDIUM 3 MEDIUM, 28 LOW
Other records, highest priority first
- TI-2026-31807 Use after free in Apple SafariPriority MEDIUM 43
- TI-2026-31823 Use after free in Apple SafariPriority MEDIUM 40
- TI-2026-31797 Type confusion in Apple SafariPriority MEDIUM 40
Show all 31 records →
Release · 2026-06-29
Apple iOS and iPadOS 18.7.10, 26.5.2
23 records Highest priority Priority MEDIUM 3 MEDIUM, 20 LOW
Other records, highest priority first
- TI-2026-28748 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 46
- TI-2026-31823 Use after free in Apple SafariPriority MEDIUM 40
- TI-2026-31797 Type confusion in Apple SafariPriority MEDIUM 40
Show all 23 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-43700
2026-10-03 Alias added: GHSA-gc99-j9gc-r79x

References

Advisory 3

Other 4

TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8

See all 2382 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences