CVE-2026-23866

MEDIUM EPSS 36.8%
Published May 1, 20262mo ago · Modified Jun 17, 20262w ago
4.3 CVSS 3.1
Medium
Find Similar
Published May 1, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
36.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-940

Affected Products 2

VendorProductVersionRange
whatsappwhatsapp*≥2.25.8.0  –  ≤2.26.7.10
whatsappwhatsapp*≥2.25.8.0  –  ≤2.26.15.72

References 2

  • facebook.com https://www.facebook.com/security/advisories/cve-2026-23866
    Third Party Advisory
  • whatsapp.com https://www.whatsapp.com/security/advisories/2026
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.