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I. Basic Information for CVE-2026-23866
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
FacebookWhatsApp for Android 2.25.8.0 ~ 2.26.7.10 -
FacebookWhatsApp for iOS 2.25.8.0 ~ 2.26.15.72 -
II. Public POCs for CVE-2026-23866
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III. Intelligence Information for CVE-2026-23866
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IV. Related Vulnerabilities
Same product: WhatsApp for Android
Same vendor: Facebook
V. Comments for CVE-2026-23866

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