🛡️ CVE-2024-39891
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-203 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.)

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE CWE-203
Public Exploit ✅ No
Source NVD
Published 2024-07-02
Updated 2026-06-02
Modified 2025-11-05
Fix URL N/A

Affected Packages

Software From version Fixed in
authy — 26.1.0
authy-authenticator — 25.1.0

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