PT-2026-36500

CVE-2026-23866

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Published

2026-05-01

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Updated

2026-11-04

Description by

CVSS 3.1
4.3
Medium
MetricsAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Name of the Vulnerable Software and Affected Versions WhatsApp for iOS versions 2.25.8.0 through 2.26.15.72 WhatsApp for Android versions 2.25.8.0 through 2.26.7.10
Description Incomplete validation of AI-generated rich response messages containing Instagram Reels allows a user to trigger the processing of media content from an arbitrary URL on another user's device. This issue can lead to the invocation of OS-controlled custom URL scheme handlers and the potential exposure of information, such as IP addresses and request headers.
Recommendations Update WhatsApp for iOS to a version newer than 2.26.15.72. Update WhatsApp for Android to a version newer than 2.26.7.10.
Exploitability
Fix
Vendors
Affected products
Weakness enumeration
CWE-940: Improper Verification of Source of a Communication Channel
Related identifiers
CVE-2026-23866
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