CVE-2016-6621: Phpmyadmin/phpmyadmin PhpMyAdmin Server-side Request Forgery (SSRF) Vulnerability

HIGH
Advisory Identifier: GHSA-44vv-mm86-7cg6
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CVSS 8.6
CWE-918
Published
Advisory Summary

CVE-2016-6621 is a HIGH (CVSS 8.6) phpmyadmin server-side request forgery (ssrf) vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Phpmyadmin/phpmyadmin libraries in the Packagist ecosystem. The issue involves phpmyadmin server-side request forgery (ssrf). Remediation is available by upgrading affected packages to version 4.6.6, 4.4.15.10, 4.0.10.19.

CVE-2016-6621 at a Glance

CVE Identifier CVE-2016-6621
GHSA Identifier GHSA-44vv-mm86-7cg6
Severity HIGH
CVSS v3.1 Base Score 8.6
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Phpmyadmin/phpmyadmin
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2016-6621

To remediate this vulnerability, upgrade all affected Phpmyadmin/phpmyadmin dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

phpmyadmin/phpmyadmin fixed: 4.6.6 
Upgrade phpmyadmin/phpmyadmin to 4.6.6
phpmyadmin/phpmyadmin fixed: 4.4.15.10 
Upgrade phpmyadmin/phpmyadmin to 4.4.15.10
phpmyadmin/phpmyadmin fixed: 4.0.10.19 
Upgrade phpmyadmin/phpmyadmin to 4.0.10.19
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for phpmyadmin/phpmyadmin

How to Check if You Are Affected

To determine whether your application is affected by CVE-2016-6621, inspect your project dependencies for Phpmyadmin/phpmyadmin:

inspect dependencies for phpmyadmin/phpmyadmin

Analyze the terminal output to locate any version of Phpmyadmin/phpmyadmin in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.6.6), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Phpmyadmin/phpmyadmin, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

The setup script for phpMyAdmin before 4.0.10.19, 4.4.x before 4.4.15.10, and 4.6.x before 4.6.6 allows remote attackers to conduct server-side request forgery (SSRF) attacks via unspecified vectors.

CVE-2016-6621 Affected Phpmyadmin/phpmyadmin Versions

3 component(s)
Fixed Versions:
4.6.64.4.15.104.0.10.19
Product / Package Ecosystem Affected Versions Fixed Version
phpmyadmin/phpmyadmin
 Packagist
≥ 4.6.0
< 4.6.6
4.6.6
phpmyadmin/phpmyadmin
 Packagist
≥ 4.4.0
< 4.4.15.10
4.4.15.10
phpmyadmin/phpmyadmin
 Packagist
< 4.0.10.19
4.0.10.19

References

NVD — CVE-2016-6621 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6621
Phpmyadmin/phpmyadmin Source Repository REPOSITORY
https://github.com/phpmyadmin/composer
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2018/07/msg00006.html
Phpmyadmin/phpmyadmin Security Information SECURITY
https://www.phpmyadmin.net/security/PMASA-2016-44

Frequently Asked Questions

What is CVE-2016-6621?
CVE-2016-6621 is a security vulnerability in Phpmyadmin/phpmyadmin involving phpMyAdmin server-side request forgery (SSRF) under CWE-918: Server-Side Request Forgery (SSRF).
Which Phpmyadmin/phpmyadmin versions are affected?
Affected versions include releases prior to 4.6.6, 4.4.15.10, 4.0.10.19 across affected packages: phpmyadmin/phpmyadmin.
What version fixes CVE-2016-6621?
Upgrading to 4.6.6, 4.4.15.10, 4.0.10.19 (or the latest patched release for your respective branch) resolves the vulnerability.
Is phpmyadmin/phpmyadmin affected?
Yes, phpmyadmin/phpmyadmin is affected in releases prior to 4.6.6, 4.4.15.10, 4.0.10.19. Upgrade your dependency to 4.6.6, 4.4.15.10, 4.0.10.19 or later.
What is the CVSS score of CVE-2016-6621?
CVE-2016-6621 has a CVSS v3.1 base score of 8.6 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
What CWE is associated with CVE-2016-6621?
CVE-2016-6621 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check Packagist dependencies for CVE-2016-6621?
Run the dependency tree command: 'inspect dependencies for phpmyadmin/phpmyadmin'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-44vv-mm86-7cg6",
  "modified" : "2025-04-21T22:59:19Z",
  "published" : "2022-05-14T03:14:46Z",
  "aliases" : [ "CVE-2016-6621" ],
  "summary" : "phpMyAdmin server-side request forgery (SSRF)",
  "details" : "The setup script for phpMyAdmin before 4.0.10.19, 4.4.x before 4.4.15.10, and 4.6.x before 4.6.6 allows remote attackers to conduct server-side request forgery (SSRF) attacks via unspecified vectors.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpmyadmin/phpmyadmin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.6.0"
      }, {
        "fixed" : "4.6.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpmyadmin/phpmyadmin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.4.0"
      }, {
        "fixed" : "4.4.15.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpmyadmin/phpmyadmin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.0.10.19"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-6621"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/phpmyadmin/composer"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2018/07/msg00006.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.phpmyadmin.net/security/PMASA-2016-44"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-21T22:59:19Z",
    "nvd_published_at" : "2017-01-31T19:59:00Z"
  }
}