CVE-2024-39891
CVSS v3
5.3
MEDIUM
EPSS Score
1.7 %
exploit probability, as of 2026-10-19
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Get an alert for each new CVE published for the software you run.
Affected and fixed versions
Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2024-39891 yet.
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.)
CISA Known Exploited Vulnerability
- Date Added
- 2024-07-23
- Patch Due Date
- 2024-08-13
- Ransomware Use
- Unknown
Technical details
- Published
- 2024-07-02
Frequently asked questions
What is CVE-2024-39891?
Is CVE-2024-39891 actively exploited?
What is the CVSS score for CVE-2024-39891?
Hear about the next vulnerability in your software
CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.
Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month
Go further
- For a threat intelligence platform: malware, C2 and ransomware indicators over STIX/TAXII.
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
- Running this software? CVE Watch alerts you to new vulnerabilities in your products.
Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.