GHSA-gh9q-2xrm-x6qv

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Source
https://github.com/advisories/GHSA-gh9q-2xrm-x6qv
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-gh9q-2xrm-x6qv/GHSA-gh9q-2xrm-x6qv.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-gh9q-2xrm-x6qv
Aliases
Downstream
Related
Published
2025-03-03T20:53:43Z
Modified
2025-11-04T00:48:28.649588Z
Severity
  • 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L CVSS Calculator
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
CGI has Denial of Service (DoS) potential in Cookie.parse
Details

There is a possibility for DoS by in the cgi gem. This vulnerability has been assigned the CVE identifier CVE-2025-27219. We recommend upgrading the cgi gem.

Details

CGI::Cookie.parse took super-linear time to parse a cookie string in some cases. Feeding a maliciously crafted cookie string into the method could lead to a Denial of Service.

Please update CGI gem to version 0.3.5.1, 0.3.7, 0.4.2 or later.

Affected versions

cgi gem versions <= 0.3.5, 0.3.6, 0.4.0 and 0.4.1.

Credits

Thanks to lio346 for discovering this issue. Also thanks to mame for fixing this vulnerability.

Database specific 
{
    "cwe_ids": [
        "CWE-400",
        "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-03T20:53:43Z",
    "severity": "MODERATE",
    "nvd_published_at": "2025-03-04T00:15:31Z"
}
References

Affected packages

RubyGems / cgi

Package

Name
cgi
Purl
pkg:gem/cgi

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.3.5.1

Affected versions

0.*

0.1.0
0.1.0.1
0.1.0.2
0.1.1
0.2.0
0.2.1
0.2.2
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5

RubyGems / cgi

Package

Name
cgi
Purl
pkg:gem/cgi

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0.3.6
Fixed
0.3.7

Affected versions

0.*

0.3.6

RubyGems / cgi

Package

Name
cgi
Purl
pkg:gem/cgi

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0.4.0
Fixed
0.4.2

Affected versions

0.*

0.4.0
0.4.1
0.4.2.beta1
0.4.2.beta2