CVE-2026-23866

Summary

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.

Affected Software

VendorProductVersion RangeStatus
FacebookWhatsApp for Android2.25.8.0 < 2.26.7.10affected
FacebookWhatsApp for iOS2.25.8.0 < 2.26.15.72affected

Weaknesses

  • Improper Verification of Source of a Communication Channel (CWE-940)

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References