Cross-Origin Data Exfiltration Vulnerability in Safari and macOS by Apple
CVE-2026-43708

4.3MEDIUM

Key Information:

Vendor

Apple
Status
Safari
iOS And iPad OS
Mac OS
Vendor
CVE Published:
29 June 2026

What is CVE-2026-43708?

A cross-origin data exfiltration vulnerability has been identified in Safari and related platforms. This issue allows malicious websites to potentially extract sensitive data from users, emphasizing the importance of secure input validation measures. Apple has released updates to address this vulnerability in Safari version 26.5.2, as well as in the latest releases of iOS, iPadOS, and macOS Tahoe. Users are encouraged to update their systems to enhance security and protect against unauthorized data access.

Affected Version(s)

iOS and iPadOS 0 < 26.5.2

macOS 0 < 26.5.2

Safari 0 < 26.5.2

References

https://support.apple.com/en-us/127594
https://support.apple.com/en-us/127595
https://support.apple.com/en-us/127685

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.