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.
History

Mon, 04 May 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Whatsapp
Whatsapp whatsapp For Android
Whatsapp whatsapp For Ios
Vendors & Products Whatsapp
Whatsapp whatsapp For Android
Whatsapp whatsapp For Ios

Sat, 02 May 2026 12:00:00 +0000

Type Values Removed Values Added
Title Unvalidated Media URL Processing Via WhatsApp AI Rich Response Messages

Fri, 01 May 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-940
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 01 May 2026 16:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C'}


Fri, 01 May 2026 16:15:00 +0000

Type Values Removed Values Added
Description 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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Meta

Published:

Updated: 2026-05-01T17:42:09.286Z

Reserved: 2026-01-16T19:49:26.309Z

Link: CVE-2026-23866

cve-icon Vulnrichment

Updated: 2026-05-01T17:42:01.834Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-01T16:16:29.980

Modified: 2026-05-04T15:21:58.203

Link: CVE-2026-23866

cve-icon Redhat

No data.