CVE-2024-23271: A malicious website may cause unexpected cross-origin behavior in Apple Safari
CVE-2024-23271 is a high-severity vulnerability in Apple Safari that involves a logic issue causing unexpected cross-origin behavior. This flaw could allow a malicious website to bypass normal cross-origin restrictions, potentially exposing user data or browser state in unintended ways. Apple addressed this issue with improved checks in Safari 17. 3 and corresponding updates to iOS, iPadOS, macOS Sonoma, tvOS, and watchOS. The vulnerability has a CVSS score of 7. 3, indicating significant impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time. The vendor advisory confirms the issue is fixed in the specified software versions, and users should update to these versions to mitigate the risk.
AI Analysis
Technical Summary
CVE-2024-23271 is a logic vulnerability in Apple Safari that may cause unexpected cross-origin behavior when visiting a malicious website. This issue was resolved by Apple through improved validation checks in Safari 17.3 and related OS updates (iOS 17.3, iPadOS 17.3, macOS Sonoma 14.3, tvOS 17.3, watchOS 10.3). The vulnerability is classified under CWE-284 (Improper Access Control) and has a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L), indicating that it can be exploited remotely without privileges or user interaction and may lead to partial confidentiality, integrity, and availability impacts. The vendor advisory explicitly states the issue is fixed in these versions, and no known exploits have been reported.
Potential Impact
If exploited, this vulnerability could allow a malicious website to cause unexpected cross-origin behavior in Safari, potentially leading to unauthorized access to information or manipulation of browser state across origins. The CVSS score of 7.3 reflects a high impact on confidentiality, integrity, and availability. However, there are no known active exploits in the wild, and the issue is mitigated by updating to the fixed versions.
Mitigation Recommendations
Apple has released official fixes for this vulnerability in Safari 17.3 and the corresponding OS updates (iOS 17.3, iPadOS 17.3, macOS Sonoma 14.3, tvOS 17.3, watchOS 10.3). Users and administrators should apply these updates promptly to remediate the issue. No additional mitigations are required beyond installing the official patches.
CVE-2024-23271: A malicious website may cause unexpected cross-origin behavior in Apple Safari
Description
CVE-2024-23271 is a high-severity vulnerability in Apple Safari that involves a logic issue causing unexpected cross-origin behavior. This flaw could allow a malicious website to bypass normal cross-origin restrictions, potentially exposing user data or browser state in unintended ways. Apple addressed this issue with improved checks in Safari 17. 3 and corresponding updates to iOS, iPadOS, macOS Sonoma, tvOS, and watchOS. The vulnerability has a CVSS score of 7. 3, indicating significant impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time. The vendor advisory confirms the issue is fixed in the specified software versions, and users should update to these versions to mitigate the risk.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-23271 is a logic vulnerability in Apple Safari that may cause unexpected cross-origin behavior when visiting a malicious website. This issue was resolved by Apple through improved validation checks in Safari 17.3 and related OS updates (iOS 17.3, iPadOS 17.3, macOS Sonoma 14.3, tvOS 17.3, watchOS 10.3). The vulnerability is classified under CWE-284 (Improper Access Control) and has a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L), indicating that it can be exploited remotely without privileges or user interaction and may lead to partial confidentiality, integrity, and availability impacts. The vendor advisory explicitly states the issue is fixed in these versions, and no known exploits have been reported.
Potential Impact
If exploited, this vulnerability could allow a malicious website to cause unexpected cross-origin behavior in Safari, potentially leading to unauthorized access to information or manipulation of browser state across origins. The CVSS score of 7.3 reflects a high impact on confidentiality, integrity, and availability. However, there are no known active exploits in the wild, and the issue is mitigated by updating to the fixed versions.
Mitigation Recommendations
Apple has released official fixes for this vulnerability in Safari 17.3 and the corresponding OS updates (iOS 17.3, iPadOS 17.3, macOS Sonoma 14.3, tvOS 17.3, watchOS 10.3). Users and administrators should apply these updates promptly to remediate the issue. No additional mitigations are required beyond installing the official patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2024-01-12T22:22:21.498Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69ceb81de6bfc5ba1df6e1bc
Added to database: 4/2/2026, 6:40:29 PM
Last enriched: 4/9/2026, 11:06:42 PM
Last updated: 5/20/2026, 8:57:05 PM
Views: 29
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