CVE-2013-6386: Drupal 6.x before 6.29 and 7.x before 7.24 uses the PHP mt_rand function to generate random numbers, which...

Security readout for executives and security teams

Older Drupal 6 and 7 releases used a predictable random-number generator for security strings. A remote attacker could brute force those strings and bypass intended restrictions. The business risk is highest for internet-facing Drupal sites still below the fixed release levels. Exposure is likely limited to Drupal 6.x sites older than 6.29 and Drupal 7.x sites older than 7.24, especially public sites where attackers can repeatedly test security-string guesses. Treat this as a legacy-platform cleanup priority. It is old, but public Drupal systems below the fixed versions may expose access-control bypass risk without requiring local access. Mitigation focus: Upgrade Drupal 6.x to 6.29 or later if applicable.; Upgrade Drupal 7.x to 7.24 or later if applicable.; Apply relevant Debian Drupal security updates for packaged deployments..

Prepared

Jun 14, 2026, 15:13 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.