CVE-2025-30221 (CVSS 4.3)

Description

Pitchfork is a preforking HTTP server for Rack applications. Versions prior to 0.11.0 are vulnerable to HTTP Response Header Injection when used in conjunction with Rack 3. The issue was fixed in Pitchfork release 0.11.0. No known workarounds are available.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-113 CWE-113

References

Other References

https://github.com/Shopify/pitchfork/commit/17ed9b61bf9f58957065f7405b66102daf86bf55 https://github.com/Shopify/pitchfork/security/advisories/GHSA-pfqj-w6r6-g86v

Frequently Asked Questions

What is CVE-2025-30221? +

Pitchfork is a preforking HTTP server for Rack applications. Versions prior to 0.11.0 are vulnerable to HTTP Response Header Injection when used in conjunction with Rack 3. The issue was fixed in Pitchfork release 0.11.0. No known workarounds are available. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-30221? +

CVE-2025-30221 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2025-30221? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-30221