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TI-2026-16713 Aliases CVE-2026-20656GHSA-wxwg-9693-mqg4

Improper authorization in Apple Safari

Priority LOW 15CWE-285Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-285.

Summary

A logic issue was addressed with improved validation. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, macOS Tahoe 26.3. An app may be able to access a user's Safari history.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00137 3rd percentileScored 2026-11-07
Fix Fixed Safari (Apple): 26.3iOS and iPadOS (Apple): 18.7.5+1 more product

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

VendorProductAffected versionsFixed inStatusSource
AppleSafaribefore 26.326.3Patch availableCNA
AppleiOS and iPadOSbefore 18.7.518.7.5Patch availableCNA
ApplemacOSbefore 26.326.3Patch availableCNA
  • Safari VendorApple Affected before 26.3 Fixed in 26.3 Patch available CNA
  • iOS and iPadOS VendorApple Affected before 18.7.5 Fixed in 18.7.5 Patch available CNA
  • macOS VendorApple Affected before 26.3 Fixed in 26.3 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*before 26.3VulnerableApple
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 18.7.5VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 18.7.5VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 26.3VulnerableApple
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 18.7.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 18.7.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple

Remediation

  • Fix · CNA Safari (Apple) Fixed in 26.3
  • Fix · CNA iOS and iPadOS (Apple) Fixed in 18.7.5
  • Fix · CNA macOS (Apple) Fixed in 26.3

Fixed in the same release

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

  • Release ·

    Apple macOS 26.3

    21 records Highest priority Priority CRITICAL 1 CRITICAL, 2 MEDIUM, 18 LOW

    Other records, highest priority first

    • TI-2026-16755 Memory corruption in Apple iOS and iPadOSPriority CRITICAL 93
    • TI-2026-16709 Uncontrolled resource consumption in Apple SafariPriority MEDIUM 40
    • TI-2026-16707 Uncontrolled resource consumption in Apple iOS and iPadOSPriority MEDIUM 40
    Show all 21 records →
  • Release ·

    Apple Safari 26.3

    8 records Highest priority Priority MEDIUM 1 MEDIUM, 7 LOW

    Other records, highest priority first

    • TI-2026-16709 Uncontrolled resource consumption in Apple SafariPriority MEDIUM 40
    • TI-2026-16716 Path traversal in Apple SafariPriority LOW 34
    • TI-2026-16701 Memory corruption in Apple SafariPriority LOW 29
    Show all 8 records →
Show 1 more group
  • Release ·

    Apple iOS and iPadOS 18.7.5

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-16673 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2026-16729 Apple iOS and iPadOS: Turning off "Load remote content in messages” may not apply to all…Priority LOW 30
    • TI-2026-16662 Memory corruption in Apple iOS and iPadOSPriority LOW 21
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-20656
  2. 2026-10-03 Alias added: GHSA-wxwg-9693-mqg4

References

Advisory 3

  • 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