HighFix available
ruby — security advisory
The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object.
- Products
- ruby
- Affected versions
- Not specified
- Fixed versions
- 2.7.7-r0, 3.0.5-r0, 3.1.3-r0
- CVEs
- CVE-2021-33621
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:05 UTC · Revision 1
Source evidence
The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object.
osv:ALPINE-CVE-2021-33621
ruby
Fixed versions: 2.7.7-r0
ruby
Fixed versions: 3.0.5-r0
ruby
Fixed versions: 3.1.3-r0
ruby
Fixed versions: 3.1.3-r0
ruby
Fixed versions: 3.1.3-r0
ruby
Fixed versions: 3.1.3-r0
ruby
Fixed versions: 3.1.3-r0
ruby
Fixed versions: 3.1.3-r0
ruby
Fixed versions: 3.1.3-r0
ruby
Fixed versions: 3.1.3-r0
ruby
Fixed versions: 3.1.3-r0
Complete source record
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"url": "https://osv.dev/vulnerability/ALPINE-CVE-2021-33621",
"method": "structured",
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"summary": "The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object.",
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"aliases": [
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"modified": "2026-10-23T17:17:56.190930842Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2021-33621"
]
},
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"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
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"source_id": "core-osv",
"document_id": 415459,
"published_at": "2022-11-18T23:15:18.987+00:00"
}