Vulnerability Details CVE-2026-23866
Incomplete validation of AI rich response messages for Instagram Reels in WhatsApp for iOS v2.25.8.0 to v2.26.15.72 and WhatsApp for Android v2.25.8.0 to v2.26.7.10 could have allowed a user to trigger processing of media content from an arbitrary URL on another user’s device, including triggering OS-controlled custom URL scheme handlers. We have not seen evidence of exploitation in the wild.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.6%
CVSS Severity
CVSS v3 Score 4.3
References