CVE-2024-39891

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

02/07/2024

Last modified:

05/11/2025

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.)

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

5.30

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:twilio:authy::::::iphone_os::*		26.1.0 (excluding)
cpe:2.3:a:twilio:authy_authenticator::::::android::*		25.1.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-39891

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools