CVE-2016-9847: phpMyAdmin

Medium severity, CVSS 5.3. EPSS: 2% chance of exploitation in the next 30 days.

An issue was discovered in phpMyAdmin. When the user does not specify a blowfish_secret key for encrypting cookies, phpMyAdmin generates one at runtime. A vulnerability was reported where the way this value is created uses a weak algorithm. This could allow an attacker to determine the user's blowfish_secret and potentially decrypt their cookies. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.

Affected products

• phpMyAdmin phpMyAdmin: version 4.6.0 only; version 4.6.1 only; version 4.6.2 only; version 4.6.3 only; version 4.6.4 only; version 4.0.0 only; …

Published 2016-12-11. Last modified 2026-06-17.