CVE-2024-39891
Twilio Authy Information Disclosure Vulnerability
Twilio Authy
CVSS
5.3MediumExploit odds (EPSS)1.67%Chance of exploitation activity in the next 30 days, higher than 76% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Timeline
Description
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.
Text from CVE List
Affected versions 1
- n/aaffected: n/aCVE List
References 7
- twilio.com/en-us/changelog/Security_Alert_Authy_App_Android_iOSFixvia CISA KEV
- twilio.com/en-us/changelogFixvia CVE List
- twilio.com/docs/usage/security/reporting-vulnerabilitiesAdvisoryvia CVE List
- bleepingcomputer.com/news/security/hackers-abused-api-to-verify-millions-of-authy-mfa-phone-numbers/Advisoryvia CVE List
- nvd.nist.gov/vuln/detail/CVE-2024-39891Referencevia CISA KEV
- cwe.mitre.org/data/definitions/203.htmlReferencevia CVE List
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-39891Referencevia CVE List