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CVE-2024-39891: Twilio Authy Information Disclosure Vulnerability

criticalknown exploitedCVE-2024-39891
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Twilioproduct: AuthyInformation disclosure
What
Twilio Authy contains an information disclosure vulnerability in its API that allows an unauthenticated endpoint to respond with information about registered phone numbers.
Who is affected
Unauthenticated users can exploit this vulnerability against any deployment of Authy.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Implement the recommended security measures provided by Twilio.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-07-23
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2024-39891

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2024-39891coverage & exploitation statusNVD · CVE.org

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