cve.bz

CVE-2021-33621

8.8 highEPSS 2.5%

High (8.8). EPSS 2.5% chance of exploitation in the next 30 days. Fixed in cgi 0.1.0.2, 0.2.2, 0.3.5.

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.

Severity

CVSS 3.1

8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
2.5% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE
CWE-74
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-vc47-6rqg-c7f5RubyGemscgi>=0.3.0 <0.3.50.3.5
GHSA-vc47-6rqg-c7f5RubyGemscgi>=0.2.0 <0.2.20.2.2
GHSA-vc47-6rqg-c7f5RubyGemscgi<0.1.0.20.1.0.2

References

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