Researcher Uncovers Vulnerability Exposing Phone Numbers Linked to Google Accounts
Jun 10, 2025
Vulnerability / API Security
Google has acted to resolve a security flaw that could allow malicious actors to brute-force recovery phone numbers associated with Google accounts, potentially compromising user privacy and security. Singaporean security researcher “brutecat” identified that the vulnerability exploited a weakness in the company’s account recovery feature. The issue involved a now-obsolete version of the Google username recovery form (“accounts.google[.]com/signin/usernamerecovery”) that lacked sufficient anti-abuse measures to limit excessive requests. This page allows users to check if a recovery email or phone number is linked to a specific display name (e.g., “John Smith”). By bypassing the CAPTCHA rate limits, attackers could rapidly test various permutations of a Google account’s phone number, leading to possible exploitation.
Vulnerability / API Security
Security Flaw Discovered in Google Account Recovery Process Exposes User Privacy On June 10, 2025, a significant security vulnerability was identified in Google’s account recovery system, raising concerns about potential risks to user privacy and security. The flaw, discovered by…