An issue was discovered in cookie encryption in phpMyAdmin. The decryption of the username/password is vulnerable to a padding oracle attack. This can allow an attacker who has access to a user's browser cookie file to decrypt the username and password. Furthermore, the same initialization vector (IV) is used to hash the username and password stored in the phpMyAdmin cookie. If a user has the same password as their username, an attacker who examines the browser cookie can see that they are the same - but the attacker can not directly decode these values from the cookie as it is still hashed. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.1, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from phpmyadmin organizations running these solutions should prioritize assessment and patching.
First disclosed in 2016, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2016-12-11T02:59:10.420
2026-06-17T00:51:26.830
Modified
CVSSv3.0: 8.1 (HIGH)
AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | phpmyadmin | phpmyadmin | 4.4.0 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.1.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.2 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.3 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.4 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.5 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.6 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.6.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.7 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.8 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.9 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.10 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.11 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.12 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.13 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.13.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.14 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.14.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.15 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.15.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.15.2 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.15.3 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.15.4 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.15.5 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.15.6 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.4.15.7 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.0 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.2 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.3 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.4 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.4.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.4.2 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.5 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.6 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.7 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.8 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.9 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.2 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.3 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.4 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.5 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.6 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.7 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.8 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.9 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.10 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.11 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.12 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.13 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.14 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.15 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.0.10.16 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.6.0 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.6.1 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.6.2 | Yes |
| Application | phpmyadmin | phpmyadmin | 4.6.3 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For phpmyadmin's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.