CVE-2026-23866
- State
- Published
- Severity
- 4.3 Medium
- Published
- May 1, 2026
- Updated
- May 1, 2026
- Reserved
- Jan 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C | Meta |
Weaknesses
- CWE-940 Improper Verification of Source of a Communication Channel
Affected Products
| Product | Versions |
|---|---|
WhatsApp for AndroidFacebook |
|
WhatsApp for iOSFacebook |
|
References
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