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MEDIUM severity

phpMyAdmin allows to detect if user is logged inGHSA-r643-7xfg-ppc5

MEDIUM

GHSA-r643-7xfg-ppc5 is a medium-severity (CVSS 4.3) Information Exposure vulnerability in phpmyadmin/phpmyadmin. A fix is available for phpmyadmin/phpmyadmin — see the affected versions and patch details below.

Also known asCVE-2016-6625
Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs65th percentile — riskier than 65% of all scored CVEsHighest risk
0.00%0.53%1.05%1.58%0.3%1.1%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

3 pkgs affected
🐘phpmyadmin/phpmyadmin🐘phpmyadmin/phpmyadmin🐘phpmyadmin/phpmyadmin

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

An issue was discovered in phpMyAdmin. An attacker can determine whether a user is logged in to phpMyAdmin. The user's session, username, and password are not compromised by this vulnerability. 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.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistphpmyadmin/phpmyadmin≥ 4.6&&< 4.6.44.6.4composer require phpmyadmin/phpmyadmin:^4.6.4
🐘Packagistphpmyadmin/phpmyadmin≥ 4.4&&< 4.4.15.84.4.15.8composer require phpmyadmin/phpmyadmin:^4.4.15.8
🐘Packagistphpmyadmin/phpmyadmin≥ 4.0&&< 4.0.10.174.0.10.17composer require phpmyadmin/phpmyadmin:^4.0.10.17

Affected Products

1 product · 60 configurations
Application
phpmyadminphpmyadmin
60 versions
4.0.04.0.14.0.24.0.34.0.44.0.4.14.0.4.24.0.54.0.64.0.74.0.84.0.9

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for phpmyadmin/phpmyadmin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update phpmyadmin/phpmyadmin to 4.6.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r643-7xfg-ppc5 is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

An issue was discovered in phpMyAdmin. An attacker can determine whether a user is logged in to phpMyAdmin. The user's session, username, and password are not compromised by this vulnerability. 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.
O3 Security · Impact-Aware SCA

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GHSA-r643-7xfg-ppc5: phpmyadmin — Fixed in 4.6.4