How severe is CVE-2011-4634?

No CVSS score has been assigned to CVE-2011-4634 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2011-4634?

CVE-2011-4634 affects the following packages: phpmyadmin/phpmyadmin (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2011-4634?

Update phpmyadmin/phpmyadmin to 3.4.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2011-4634 is resolved across your whole dependency graph.

How do I detect CVE-2011-4634 in my Packagist dependencies?

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.

How do I mitigate CVE-2011-4634 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2011-4634 actively exploited in the wild?

Yes. There are 3 known exploit references for CVE-2011-4634, including 3 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2011-4634?

CVE-2011-4634 has an EPSS (Exploit Prediction Scoring System) score of 2.1%, placing it in the 82th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2011-4634?

CVE-2011-4634 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2011-4634 published, and has it been updated?

CVE-2011-4634 was published on December 22, 2011 and was last updated on April 10, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2011-4634 — phpmyadmin

CVE-2011-4634 is a Cross-site Scripting (XSS) vulnerability in phpmyadmin/phpmyadmin. 3 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for phpmyadmin/phpmyadmin — see the affected versions and patch details below.

phpMyAdmin vulnerable to Cross-site Scripting

Also known asGHSA-9j9h-cpgc-8356

Published

Dec 22, 2011

Updated

Apr 10, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

3 known

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.1%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs82th percentile — riskier than 82% of all scored CVEsHighest risk

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

Real-World Exposure

1 pkg affected

🐘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

Multiple cross-site scripting (XSS) vulnerabilities in phpMyAdmin 3.4.x before 3.4.8 allow remote attackers to inject arbitrary web script or HTML via (1) a crafted database name, related to the Database Synchronize panel; (2) a crafted database name, related to the Database rename panel; (3) a crafted SQL query, related to the table overview panel; (4) a crafted SQL query, related to the view creation dialog; (5) a crafted column type, related to the table search dialog; or (6) a crafted column type, related to the create index dialog.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`phpmyadmin/phpmyadmin`	≥ 3.4.0&&< 3.4.8	3.4.8`composer require phpmyadmin/phpmyadmin:^3.4.8`

Affected Products

1 product · 10 configurations

Application

phpmyadminphpmyadmin

10 versions

3.4.0.03.4.1.03.4.2.03.4.3.03.4.3.13.4.3.23.4.4.03.4.5.03.4.6.03.4.7.0

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Multiple cross-site scripting (XSS) vulnerabilities in phpMyAdmin 3.4.x …

phpmyadmin.git.sourceforge.netNVDNov 2012

Report on phpmyadmin.git.sourceforge.net

phpmyadmin.git.sourceforge.netNVDNov 2012

Report on phpmyadmin.git.sourceforge.net

phpmyadmin.git.sourceforge.netNVDNov 2012

Detection & mitigation playbook

Open-source dependency

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.
Fix
Update phpmyadmin/phpmyadmin to 3.4.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2011-4634 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

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CVE-2011-4634 — phpmyadmin

EPSS Exploitation Probability

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2011-4634 in your dependencies?