CVE-2026-23866

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

4.3 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

May 01, 2026

Last Modified

May 01, 2026

CWE ID

CWE-940

Source

NVD

Vendor

Facebook

Product

WhatsApp for Android, WhatsApp for iOS

External References

https://www.facebook.com/security/advisories/cve-2026-23866
https://www.whatsapp.com/security/advisories/2026

CVE-2026-23866

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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