In the Twilio Authy API, accessed by Authy Android before 25.1.0 and Authy iOS before 26.1.0, an unauthenticated endpoint provided access to certain phone-number data, as exploited in the wild in June 2024. Specifically, the endpoint accepted a stream of requests containing phone numbers, and responded with information about whether each phone number was registered with Authy. (Authy accounts were not compromised, however.)
History

Wed, 30 Jul 2025 02:15:00 +0000

Type Values Removed Values Added
First Time appeared Twilio authy 2-factor Authentication
CPEs cpe:2.3:a:twilio:authy_2-factor_authentication:*:*:*:*:*:*:*:*
Vendors & Products Twilio authy 2-factor Authentication
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-07-02T00:00:00.000Z

Updated: 2025-07-30T01:36:37.977Z

Reserved: 2024-07-02T00:00:00.000Z

Link: CVE-2024-39891

cve-icon Vulnrichment

Updated: 2024-08-02T04:33:11.402Z

cve-icon NVD

Status : Analyzed

Published: 2024-07-02T18:15:03.447

Modified: 2024-12-20T16:15:33.687

Link: CVE-2024-39891

cve-icon Redhat

No data.