CVE-2024-39891
Twilio Authy Information Disclosure Vulnerability
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
YesDecision
Descriptions
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.)
En la API de Twilio Authy, a la que accedía Authy Android antes de 25.1.0 y Authy iOS antes de 26.1.0, un endpoint no autenticado proporcionaba acceso a ciertos datos de números de teléfono. (Sin embargo, las cuentas de Authy no se vieron comprometidas).
Twilio Authy contains an information disclosure vulnerability in its API that allows an unauthenticated endpoint to accept a request containing a phone number and respond with information about whether the phone number was registered with Authy.
CVSS Scores
SSVC
- Decision:Act
Timeline
- 2024-07-02 CVE Reserved
- 2024-07-02 CVE Published
- 2024-07-23 Exploited in Wild
- 2024-08-02 CVE Updated
- 2024-08-13 KEV Due Date
- 2024-10-17 EPSS Updated
- ---------- First Exploit
CWE
- CWE-203: Observable Discrepancy
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://cwe.mitre.org/data/definitions/203.html | Technical Description | |
| https://www.bleepingcomputer.com/news/security/hackers-abused-api-to-verify-millions-of-authy-mfa-phone-numbers | Media Coverage | |
| https://www.twilio.com/docs/usage/security/reporting-vulnerabilities | Product | |
| https://www.twilio.com/en-us/changelog | Product |
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Twilio Search vendor "Twilio" | Authy Search vendor "Twilio" for product "Authy" | < 26.1.0 Search vendor "Twilio" for product "Authy" and version " < 26.1.0" | iphone_os |
Affected
| ||||||
| Twilio Search vendor "Twilio" | Authy Authenticator Search vendor "Twilio" for product "Authy Authenticator" | < 25.1.0 Search vendor "Twilio" for product "Authy Authenticator" and version " < 25.1.0" | android |
Affected
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