How severe is CVE-2005-3621?

No CVSS score has been assigned to CVE-2005-3621 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2005-3621?

CVE-2005-3621 affects the following packages: phpmyadmin/phpmyadmin (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2005-3621?

Update phpmyadmin/phpmyadmin to 2.6.4-pl4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2005-3621 is resolved across your whole dependency graph.

How do I detect CVE-2005-3621 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-2005-3621 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2005-3621 actively exploited in the wild?

No public exploit code has been indexed for CVE-2005-3621 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2005-3621?

CVE-2005-3621 has an EPSS (Exploit Prediction Scoring System) score of 1.6%, placing it in the 75th 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.

When was CVE-2005-3621 published, and has it been updated?

CVE-2005-3621 was published on November 16, 2005 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-2005-3621 — phpmyadmin

CVE-2005-3621 is a security vulnerability in phpmyadmin/phpmyadmin. A fix is available for phpmyadmin/phpmyadmin — see the affected versions and patch details below.

phpMyAdmin CRLF Injection Vulnerability

Also known asGHSA-wj42-52pv-wfj2

Published

Nov 16, 2005

Updated

Apr 10, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs75th percentile — riskier than 75% 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

CRLF injection vulnerability in phpMyAdmin before 2.6.4-pl4 allows remote attackers to conduct HTTP response splitting attacks via unspecified scripts.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`phpmyadmin/phpmyadmin`	all versions	2.6.4-pl4`composer require phpmyadmin/phpmyadmin:^2.6.4-pl4`

Affected Products

1 product · 13 configurations

Application

phpmyadminphpmyadmin

13 versions

2.2.02.2.7_pl12.5.2_pl12.5.32.5.42.5.5_pl12.5.6_rc22.5.7_pl12.6.0_pl32.6.1_pl32.6.2_pl12.6.3_pl1

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 2.6.4-pl4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2005-3621 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

CRLF injection vulnerability in phpMyAdmin before 2.6.4-pl4 allows remote attackers to conduct HTTP response splitting attacks via unspecified scripts.

O3 Security · Impact-Aware SCA

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