CVE-2024-39891 is an unauthenticated endpoint vulnerability in the Twilio Authy API, affecting Authy Android versions prior to 25.1.0 and Authy iOS versions prior to 26.1.0. This flaw allowed attackers to determine if a phone number was registered with Authy by sending a stream of requests, though Authy accounts themselves were not compromised. With a CVSS score of 5.3 (Medium), this vulnerability is easily exploitable over the network with low attack complexity and no user interaction required, primarily leading to information disclosure (C:L). The FAUCET Risk Score of 99/100 highlights its significant risk despite the moderate CVSS. This CVE is actively exploited in the wild, as confirmed by its inclusion in the KEV catalog. While no public exploit code (Metasploit, Nuclei, ExploitDB) is currently available, it has garnered substantial community discussion and media coverage, indicating high awareness of its exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 26.1.0CPE matchmatch criteria | cpe:2.3:a:twilio:authy:*:*:*:*:*:iphone_os:*:* | ||
< 25.1.0CPE matchmatch criteria | cpe:2.3:a:twilio:authy_authenticator:*:*:*:*:*:android:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.