{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-4873",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-4873",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-13T08:27:04.538Z",
    "updatedAt": "2026-09-15T06:02:57.389Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "connection reuse ignores TLS requirement",
      "summary": "A vulnerability exists where a connection requiring TLS incorrectly reuses an\nexisting unencrypted connection from the same connection pool. If an initial\ntransfer is made in clear-text (via IMAP, SMTP, or POP3), a subsequent request\nto that same host bypasses the TLS requirement and instead transmit data\nunencrypted.",
      "affected": [
        {
          "vendor": "curl",
          "product": "curl",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7.20.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "8.14.2"
            },
            {
              "version": "8.15.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "8.16.1"
            },
            {
              "version": "8.17.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "8.20.0"
            }
          ]
        },
        {
          "vendor": "curl",
          "product": "curl",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ec3bb8f727405642a471b4b1b9eb0118fc003104",
              "status": "affected",
              "versionType": "git",
              "lessThan": "507e7be573b0a76fca597b75ff7cb27a66e7d865"
            }
          ]
        },
        {
          "vendor": "curl",
          "product": "curl",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8.19.0",
              "status": "affected"
            },
            {
              "version": "8.18.0",
              "status": "affected"
            },
            {
              "version": "8.17.0",
              "status": "affected"
            },
            {
              "version": "8.16.0",
              "status": "affected"
            },
            {
              "version": "8.15.0",
              "status": "affected"
            },
            {
              "version": "8.14.1",
              "status": "affected"
            },
            {
              "version": "8.14.0",
              "status": "affected"
            },
            {
              "version": "8.13.0",
              "status": "affected"
            },
            {
              "version": "8.12.1",
              "status": "affected"
            },
            {
              "version": "8.12.0",
              "status": "affected"
            },
            {
              "version": "8.11.1",
              "status": "affected"
            },
            {
              "version": "8.11.0",
              "status": "affected"
            },
            {
              "version": "8.10.1",
              "status": "affected"
            },
            {
              "version": "8.10.0",
              "status": "affected"
            },
            {
              "version": "8.9.1",
              "status": "affected"
            },
            {
              "version": "8.9.0",
              "status": "affected"
            },
            {
              "version": "8.8.0",
              "status": "affected"
            },
            {
              "version": "8.7.1",
              "status": "affected"
            },
            {
              "version": "8.7.0",
              "status": "affected"
            },
            {
              "version": "8.6.0",
              "status": "affected"
            },
            {
              "version": "8.5.0",
              "status": "affected"
            },
            {
              "version": "8.4.0",
              "status": "affected"
            },
            {
              "version": "8.3.0",
              "status": "affected"
            },
            {
              "version": "8.2.1",
              "status": "affected"
            },
            {
              "version": "8.2.0",
              "status": "affected"
            },
            {
              "version": "8.1.2",
              "status": "affected"
            },
            {
              "version": "8.1.1",
              "status": "affected"
            },
            {
              "version": "8.1.0",
              "status": "affected"
            },
            {
              "version": "8.0.1",
              "status": "affected"
            },
            {
              "version": "8.0.0",
              "status": "affected"
            },
            {
              "version": "7.88.1",
              "status": "affected"
            },
            {
              "version": "7.88.0",
              "status": "affected"
            },
            {
              "version": "7.87.0",
              "status": "affected"
            },
            {
              "version": "7.86.0",
              "status": "affected"
            },
            {
              "version": "7.85.0",
              "status": "affected"
            },
            {
              "version": "7.84.0",
              "status": "affected"
            },
            {
              "version": "7.83.1",
              "status": "affected"
            },
            {
              "version": "7.83.0",
              "status": "affected"
            },
            {
              "version": "7.82.0",
              "status": "affected"
            },
            {
              "version": "7.81.0",
              "status": "affected"
            },
            {
              "version": "7.80.0",
              "status": "affected"
            },
            {
              "version": "7.79.1",
              "status": "affected"
            },
            {
              "version": "7.79.0",
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            },
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              "version": "7.78.0",
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            },
            {
              "version": "7.77.0",
              "status": "affected"
            },
            {
              "version": "7.76.1",
              "status": "affected"
            },
            {
              "version": "7.76.0",
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            },
            {
              "version": "7.75.0",
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            },
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              "version": "7.74.0",
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              "version": "7.73.0",
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              "version": "7.72.0",
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            },
            {
              "version": "7.71.1",
              "status": "affected"
            },
            {
              "version": "7.71.0",
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            },
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              "version": "7.70.0",
              "status": "affected"
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              "version": "7.69.1",
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              "version": "7.65.3",
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              "version": "7.65.1",
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            },
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              "version": "7.65.0",
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              "version": "7.64.1",
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              "version": "7.59.0",
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              "version": "7.58.0",
              "status": "affected"
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              "version": "7.57.0",
              "status": "affected"
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              "version": "7.56.1",
              "status": "affected"
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              "version": "7.56.0",
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              "version": "7.55.0",
              "status": "affected"
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              "version": "7.54.1",
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              "status": "affected"
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              "version": "7.53.1",
              "status": "affected"
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              "version": "7.53.0",
              "status": "affected"
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            {
              "version": "7.52.1",
              "status": "affected"
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            {
              "version": "7.52.0",
              "status": "affected"
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              "version": "7.51.0",
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            {
              "version": "7.50.3",
              "status": "affected"
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            {
              "version": "7.50.2",
              "status": "affected"
            },
            {
              "version": "7.50.1",
              "status": "affected"
            },
            {
              "version": "7.50.0",
              "status": "affected"
            },
            {
              "version": "7.49.1",
              "status": "affected"
            },
            {
              "version": "7.49.0",
              "status": "affected"
            },
            {
              "version": "7.48.0",
              "status": "affected"
            },
            {
              "version": "7.47.1",
              "status": "affected"
            },
            {
              "version": "7.47.0",
              "status": "affected"
            },
            {
              "version": "7.46.0",
              "status": "affected"
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            {
              "version": "7.45.0",
              "status": "affected"
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            {
              "version": "7.44.0",
              "status": "affected"
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            {
              "version": "7.43.0",
              "status": "affected"
            },
            {
              "version": "7.42.1",
              "status": "affected"
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            {
              "version": "7.42.0",
              "status": "affected"
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            {
              "version": "7.41.0",
              "status": "affected"
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            {
              "version": "7.40.0",
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            {
              "version": "7.39.0",
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            {
              "version": "7.38.0",
              "status": "affected"
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            {
              "version": "7.37.1",
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            {
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            {
              "version": "7.36.0",
              "status": "affected"
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            {
              "version": "7.35.0",
              "status": "affected"
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            {
              "version": "7.34.0",
              "status": "affected"
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            {
              "version": "7.33.0",
              "status": "affected"
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            {
              "version": "7.32.0",
              "status": "affected"
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            {
              "version": "7.31.0",
              "status": "affected"
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            {
              "version": "7.30.0",
              "status": "affected"
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            {
              "version": "7.29.0",
              "status": "affected"
            },
            {
              "version": "7.28.1",
              "status": "affected"
            },
            {
              "version": "7.28.0",
              "status": "affected"
            },
            {
              "version": "7.27.0",
              "status": "affected"
            },
            {
              "version": "7.26.0",
              "status": "affected"
            },
            {
              "version": "7.25.0",
              "status": "affected"
            },
            {
              "version": "7.24.0",
              "status": "affected"
            },
            {
              "version": "7.23.1",
              "status": "affected"
            },
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              "version": "7.23.0",
              "status": "affected"
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              "status": "affected"
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            {
              "version": "7.21.7",
              "status": "affected"
            },
            {
              "version": "7.21.6",
              "status": "affected"
            },
            {
              "version": "7.21.5",
              "status": "affected"
            },
            {
              "version": "7.21.4",
              "status": "affected"
            },
            {
              "version": "7.21.3",
              "status": "affected"
            },
            {
              "version": "7.21.2",
              "status": "affected"
            },
            {
              "version": "7.21.1",
              "status": "affected"
            },
            {
              "version": "7.21.0",
              "status": "affected"
            },
            {
              "version": "7.20.1",
              "status": "affected"
            },
            {
              "version": "7.20.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}