CVE-2013-6386 Weak cryptography in n/a

What is CVE-2013-6386?

CVE-2013-6386 is a medium-severity vulnerability in Drupal Drupal, published on 7 Dec 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Drupal 6.x before 6.29 and 7.x before 7.24 uses the PHP mt_rand function to generate random numbers, which uses predictable seeds and allows remote attackers to predict security strings and bypass intended restrictions via a brute force attack.

Weakness: CWE-310

Which versions are affected by CVE-2013-6386?

It affects 1 product.

Products include Drupal Drupal.

How do I fix CVE-2013-6386?

Upgrade to a fixed version.

Is CVE-2013-6386 being exploited?

There is no known exploitation of CVE-2013-6386 in the wild and no public exploit code.

Other vulnerabilities in Drupal Drupal

• CVE-2026-9082 Drupal Core SQL Injection Exploited Critical 9.8
• CVE-2020-13671 Drupal core Un-restricted Upload of File Exploited High 8.8
• CVE-2019-6340 Drupal Core Remote Code Execution Exploited High 8.1
• CVE-2009-3352 Other in n/a Critical 10.0
• CVE-2024-55636 Drupal core - Less critical - Gadget chain - SA-CORE-2024-006 Critical 9.8

All Drupal Drupal vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4588-3gxf-rhp2.