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TI-2024-27236 Aliases CVE-2024-40857GHSA-8476-jpv4-xp4p

Cross-site scripting in Apple Safari

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-79.

Summary

This issue was addressed through improved state management. This issue is fixed in Safari 18, iOS 18 and iPadOS 18, macOS Sequoia 15, tvOS 18, visionOS 2, watchOS 11. Processing maliciously crafted web content may lead to universal cross site scripting.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00553 46th percentileScored 2026-11-07
Fix Partial Safari (Apple): 18iOS and iPadOS (Apple): 18+4 more productsRed Hat: 1 without a fix

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 1818Patch availableCNA
AppleiOS and iPadOSbefore 1818Patch availableCNA
ApplemacOSbefore 1515Patch availableCNA
AppletvOSbefore 1818Patch availableCNA
ApplevisionOSbefore 22Patch availableCNA
ApplewatchOSbefore 1111Patch availableCNA
  • Safari VendorApple Affected before 18 Fixed in 18 Patch available CNA
  • iOS and iPadOS VendorApple Affected before 18 Fixed in 18 Patch available CNA
  • macOS VendorApple Affected before 15 Fixed in 15 Patch available CNA
  • tvOS VendorApple Affected before 18 Fixed in 18 Patch available CNA
  • visionOS VendorApple Affected before 2 Fixed in 2 Patch available CNA
  • watchOS VendorApple Affected before 11 Fixed in 11 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*before 18.0VulnerableApple
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 18.0VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 18.0VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 15.0VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 18.0VulnerableApple
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*before 2.0VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 11.0VulnerableApple
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 18.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 18.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 18.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 15.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 18.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 2.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 11.0 Vulnerable ·Apple

Remediation

  • Fix · CNA Safari (Apple) Fixed in 18
  • Fix · CNA iOS and iPadOS (Apple) Fixed in 18
  • Fix · CNA macOS (Apple) Fixed in 15
  • Fix · CNA tvOS (Apple) Fixed in 18
  • Fix · CNA visionOS (Apple) Fixed in 2
  • Fix · CNA watchOS (Apple) Fixed in 11

Fixed in the same release

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

  • Release ·

    Apple macOS 15

    36 records Highest priority Priority MEDIUM 3 MEDIUM, 33 LOW

    Other records, highest priority first

    • TI-2024-29716 Apple macOS: An app may be able to break out of its sandboxPriority MEDIUM 44
    • TI-2024-29714 Apple macOS: An app may be able to break out of its sandboxPriority MEDIUM 44
    • TI-2024-29703 Link following in Apple macOSPriority MEDIUM 40
    Show all 36 records →
  • Release ·

    Apple iOS and iPadOS 18

    19 records Highest priority Priority MEDIUM 1 MEDIUM, 18 LOW

    Other records, highest priority first

    • TI-2024-18481 Uncontrolled resource consumption in Apple iOS and iPadOSPriority MEDIUM 40
    • TI-2024-27231 Missing authorization in Apple iOS and iPadOSPriority LOW 39
    • TI-2024-18477 Path traversal in Apple iOS and iPadOSPriority LOW 39
    Show all 19 records →
Show 4 more groups
  • Release ·

    Apple visionOS 2

    14 records Highest priority Priority LOW 14 LOW

    Other records, highest priority first

    • TI-2024-29736 Uncontrolled resource consumption in Apple iOS and iPadOSPriority LOW 38
    • TI-2024-29734 Path traversal in Apple iOS and iPadOSPriority LOW 38
    • TI-2024-18483 Race condition in Apple iOS and iPadOSPriority LOW 38
    Show all 14 records →
  • Release ·

    Apple watchOS 11

    11 records Highest priority Priority LOW 11 LOW

    Other records, highest priority first

    • TI-2024-29736 Uncontrolled resource consumption in Apple iOS and iPadOSPriority LOW 38
    • TI-2024-29742 Uncontrolled resource consumption in Apple iOS and iPadOSPriority LOW 36
    • TI-2024-29753 Origin validation error in Apple SafariPriority LOW 30
    Show all 11 records →
  • Release ·

    Apple tvOS 18

    10 records Highest priority Priority LOW 10 LOW

    Other records, highest priority first

    • TI-2024-29736 Uncontrolled resource consumption in Apple iOS and iPadOSPriority LOW 38
    • TI-2024-29742 Uncontrolled resource consumption in Apple iOS and iPadOSPriority LOW 36
    • TI-2024-27235 Apple iOS and iPadOS: An attacker may be able to force a device to disconnect from a…Priority LOW 35
    Show all 10 records →
  • Release ·

    Apple Safari 18

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2024-29768 Improper authentication in Apple SafariPriority LOW 31
    • TI-2024-27245 Apple Safari: Visiting a malicious website may lead to address bar spoofingPriority LOW 31
    • TI-2024-29753 Origin validation error in Apple SafariPriority LOW 30
    Show all 4 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Not affected: 2 products
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-40857
  2. 2026-10-03 Alias added: GHSA-8476-jpv4-xp4p

References

Advisory 6

  • 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