Medium severity4.3NVD Advisory· Published Mar 27, 2025· Updated Apr 15, 2026

CVE-2025-30221

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 packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
pitchforkRubyGems	< 0.11.0	0.11.0

Patches

abab81f2afdc

https://github.com/shopify/pitchforkvia osv

17ed9b61bf9f

https://github.com/shopify/pitchforkvia osv

commit

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

github.com/advisories/GHSA-pfqj-w6r6-g86vghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2025-30221ghsaADVISORY
github.com/Shopify/pitchfork/commit/17ed9b61bf9f58957065f7405b66102daf86bf55nvdWEB
github.com/Shopify/pitchfork/security/advisories/GHSA-pfqj-w6r6-g86vnvdWEB
github.com/rubysec/ruby-advisory-db/blob/master/gems/pitchfork/CVE-2025-30221.ymlghsaWEB

News mentions

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cvss	0.280
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000