CVEvulnerability
CVE-2026-23866
4.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-05-01
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-940
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.
Affected configurations
• whatsapp whatsapp (>= 2.25.8.0 <= 2.26.7.10)
• whatsapp whatsapp (>= 2.25.8.0 <= 2.26.15.72)
Related
Weakness · CWE (1)
- CWE-940 Improper Verification of Source of a Communication Channel weakness
References
- https://www.facebook.com/security/advisories/cve-2026-23866 Third Party Advisory
- https://www.whatsapp.com/security/advisories/2026 Vendor Advisory