CVE-2024-39891

KEV
Published: Lug 02, 2024 Last Modified: Nov 05, 2025
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: none

Description

AI Translation Available

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.)

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,2319
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

203

Observable Discrepancy

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Access Control
Potential Impacts:
Read Application Data Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
View CWE Details
Application

Authy Authenticator by Twilio

Product Information
Vendor Twilio
Product Authy Authenticator
Version Range Affected
To 25.1.0 (exclusive)
cpe:2.3:a:twilio:authy_authenticator:*:*:*:*:*:android:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Authy by Twilio

Product Information
Vendor Twilio
Product Authy
Version Range Affected
To 26.1.0 (exclusive)
cpe:2.3:a:twilio:authy:*:*:*:*:*:iphone_os:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024…
https://cwe.mitre.org/data/definitions/203.html
https://cwe.mitre.org/data/definitions/203.html
https://www.bleepingcomputer.com/news/security/hackers-abus…
https://www.bleepingcomputer.com/news/security/hackers-abused-api-to-verify-mil…
https://www.twilio.com/docs/usage/security/reporting-vulner…
https://www.twilio.com/docs/usage/security/reporting-vulnerabilities
https://www.twilio.com/en-us/changelog
https://www.twilio.com/en-us/changelog
https://cwe.mitre.org/data/definitions/203.html
https://cwe.mitre.org/data/definitions/203.html
https://www.bleepingcomputer.com/news/security/hackers-abus…
https://www.bleepingcomputer.com/news/security/hackers-abused-api-to-verify-mil…
https://www.twilio.com/docs/usage/security/reporting-vulner…
https://www.twilio.com/docs/usage/security/reporting-vulnerabilities
https://www.twilio.com/en-us/changelog
https://www.twilio.com/en-us/changelog