CVE-2021-41819

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-41819
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-41819.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-41819
Aliases
Downstream
Related
Published
2022-01-01T06:15:07Z
Modified
2025-10-15T13:24:47.984122Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby.

References

Affected packages

Git / github.com/ruby/ruby

Affected ranges

Type
GIT
Repo
https://github.com/ruby/ruby
Events
Introduced
647ee6f091eafcce70ffb75ddf7e121e192ab217
Fixed
f69aeb83146be640995753667fdd6c6f157527f5

Affected versions

Other

v2_7_0
v2_7_1
v2_7_2
v2_7_3
v2_7_4

Database specific

vanir_signatures

[
    {
        "id": "CVE-2021-41819-2f76299c",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "185553476159107413192269642060714357735",
            "length": 658.0
        },
        "target": {
            "file": "ext/cgi/escape/escape.c",
            "function": "optimized_escape_html"
        },
        "source": "https://github.com/ruby/ruby/commit/f69aeb83146be640995753667fdd6c6f157527f5"
    },
    {
        "id": "CVE-2021-41819-799f160e",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "221608888545214764521643589590002473795",
                "62837079863855754692353823286478885059",
                "151633818343694841750591657495653307518",
                "112628295566100827065348454738811594068"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "ext/cgi/escape/escape.c"
        },
        "source": "https://github.com/ruby/ruby/commit/f69aeb83146be640995753667fdd6c6f157527f5"
    }
]