# CVE-2025-30221: Pitchfork HTTP Request/Response Splitting vulnerability

> CVE-2025-30221: Pitchfork HTTP Request/Response Splitting vulnerability. CVSS 4.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-30221
Last updated: 2026-06-17T09:08:22Z

- Published: 2025-03-27 14:46 UTC · Updated: 2026-06-17 09:08 UTC · Assigner: GitHub\_M
- CVSS: 4.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- EPSS: 0.29%, 21th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-113

## 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.

## Affected vendors and products

- Shopify: pitchfork

## Tracked companies

- [Shopify](https://rewindex.com/company/shopify.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-30221)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-30221)
- [https://github.com/Shopify/pitchfork/commit/17ed9b61bf9f58957065f7405b66102daf86bf55](https://github.com/Shopify/pitchfork/commit/17ed9b61bf9f58957065f7405b66102daf86bf55)
- [https://github.com/Shopify/pitchfork/security/advisories/GHSA-pfqj-w6r6-g86v](https://github.com/Shopify/pitchfork/security/advisories/GHSA-pfqj-w6r6-g86v)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-30221 · Markdown: https://rewindex.com/cve/CVE-2025-30221.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-30221 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:37.564Z