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    2 vulnerabilities by defunkt

    CVE-2026-105221 (GCVE-0-2026-105221)

    Vulnerability from nvd – Published: 2026-10-04 22:31 – Updated: 2026-10-04 22:31
    VLAI
    Title
    Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification
    Summary
    The gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_connection in lib/gist.rb sets VERIFY_NONE. Attackers can present any certificate to read or modify GitHub API traffic, stealing OAuth tokens and login credentials to read and modify the victim's gists.
    Severity
    9.1 (Critical)
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    7.4 (High)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
    CWE
    • CWE-295 - Improper Certificate Validation
    Assigner
    References
    Impacted products
    Vendor Product Version
    defunkt gist Affected: 4.0.0 , < 6.1.0 (semver)
    		Create a notification for this product.
    Date Public
    2026-06-16 00:00
    Credits
    Siyang Wu
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:gem/gist",
          "product": "gist",
          "vendor": "defunkt",
          "versions": [
            {
              "lessThan": "6.1.0",
              "status": "affected",
              "version": "4.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Siyang Wu"
        }
      ],
      "datePublic": "2026-06-16T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_connection in lib/gist.rb sets VERIFY_NONE. Attackers can present any certificate to read or modify GitHub API traffic, stealing OAuth tokens and login credentials to read and modify the victim\u0027s gists."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
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            "attackVector": "NETWORK",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
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      ],
      "problemTypes": [
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      ],
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      },
      "references": [
        {
          "name": "GitHub Issue #373",
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/defunkt/gist/issues/373"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/defunkt/gist"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/defunkt/gist/blob/v6.0.0/lib/gist.rb#L466-L468"
        },
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          ],
          "url": "https://github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf"
        },
        {
          "name": "VulnCheck Advisory: Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/gist-rubygem-before-6.1.0-disabled-tls-certificate-verification"
        }
      ],
      "title": "Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification",
      "x_generator": {
        "engine": "vulncheck-endgame"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-105221",
    "datePublished": "2026-10-04T22:31:47.153Z",
    "dateReserved": "2026-10-04T13:04:00.479Z",
    "dateUpdated": "2026-10-04T22:31:47.153Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

    CVE-2026-105221 (GCVE-0-2026-105221)

    Vulnerability from cvelistv5 – Published: 2026-10-04 22:31 – Updated: 2026-10-04 22:31
    VLAI
    Title
    Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification
    Summary
    The gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_connection in lib/gist.rb sets VERIFY_NONE. Attackers can present any certificate to read or modify GitHub API traffic, stealing OAuth tokens and login credentials to read and modify the victim's gists.
    Severity
    9.1 (Critical)
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    7.4 (High)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
    CWE
    • CWE-295 - Improper Certificate Validation
    Assigner
    References
    Impacted products
    Vendor Product Version
    defunkt gist Affected: 4.0.0 , < 6.1.0 (semver)
    		Create a notification for this product.
    Date Public
    2026-06-16 00:00
    Credits
    Siyang Wu
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:gem/gist",
          "product": "gist",
          "vendor": "defunkt",
          "versions": [
            {
              "lessThan": "6.1.0",
              "status": "affected",
              "version": "4.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Siyang Wu"
        }
      ],
      "datePublic": "2026-06-16T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_connection in lib/gist.rb sets VERIFY_NONE. Attackers can present any certificate to read or modify GitHub API traffic, stealing OAuth tokens and login credentials to read and modify the victim\u0027s gists."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
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            "integrityImpact": "HIGH",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-04T22:31:47.153Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Issue #373",
          "tags": [
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          ],
          "url": "https://github.com/defunkt/gist/issues/373"
        },
        {
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          ],
          "url": "https://github.com/defunkt/gist"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/defunkt/gist/blob/v6.0.0/lib/gist.rb#L466-L468"
        },
        {
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          ],
          "url": "https://github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf"
        },
        {
          "name": "VulnCheck Advisory: Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/gist-rubygem-before-6.1.0-disabled-tls-certificate-verification"
        }
      ],
      "title": "Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification",
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