CVE-2023-27961

Multiple validation issues were addressed with improved input sanitization. This issue is fixed in macOS Ventura 13.3, iOS 16.4 and iPadOS 16.4, iOS 15.7.4 and iPadOS 15.7.4, macOS Monterey 12.6.4, watchOS 9.4, macOS Big Sur 11.7.5. Importing a maliciously crafted calendar invitation may exfiltrate user information.

• CWE-20
• CWE-1284

• https://support.apple.com/en-us/HT213670Vendor Advisory
• https://support.apple.com/en-us/HT213673Vendor Advisory
• https://support.apple.com/en-us/HT213675Vendor Advisory
• https://support.apple.com/en-us/HT213676Vendor Advisory
• https://support.apple.com/en-us/HT213677Vendor Advisory
• https://support.apple.com/en-us/HT213678Vendor Advisory
• https://support.apple.com/en-us/HT213670Vendor Advisory
• https://support.apple.com/en-us/HT213673Vendor Advisory
• https://support.apple.com/en-us/HT213675Vendor Advisory
• https://support.apple.com/en-us/HT213676Vendor Advisory
• https://support.apple.com/en-us/HT213677Vendor Advisory
• https://support.apple.com/en-us/HT213678Vendor Advisory

Published

May 8, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

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