CVE-2026-23866

MEDIUM

4.3

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.

Details CVE

Score CVSS v3.14.3

SeveriteMEDIUM

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie5/1/2026

Derniere modification5/4/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-940

References

https://www.facebook.com/security/advisories/cve-2026-23866(cve-assign@fb.com)

https://www.whatsapp.com/security/advisories/2026(cve-assign@fb.com)

Correlations IOC

Aucune correlation enregistree

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