CVE-2021-27913: Acquia Mautic

Low severity, CVSS 3.5. EPSS: 0.5% chance of exploitation in the next 30 days.

The function mt_rand is used to generate session tokens, this function is cryptographically flawed due to its nature being one pseudorandomness, an attacker can take advantage of the cryptographically insecure nature of this function to enumerate session tokens for accounts that are not under his/her control This issue affects: Mautic Mautic versions prior to 3.3.4; versions prior to 4.0.0.

Affected products

• Acquia Mautic: before 3.3.4 (fixed in 3.3.4); version 4.0.0 only

Published 2021-08-30. Last modified 2026-06-17.