{
  "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-2026-1355",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-1355",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-02-18T20:42:07.180Z",
    "updatedAt": "2026-02-20T19:36:28.885Z",
    "importedAt": "2026-10-24T01:57:55.771Z",
    "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": "Missing Authorization Check in GitHub Enterprise Server Allows Unauthorized Uploads to Repository Migration Exports",
      "summary": "A Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to upload unauthorized content to another user’s repository migration export due to a missing authorization check in the repository migration upload endpoint. By supplying the migration identifier, an attacker could overwrite or replace a victim’s migration archive, potentially causing victims to download attacker-controlled repository data during migration restores or automated imports. An attacker would require authentication to the victim's GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.2, 3.18.5, 3.17.11, 3.16.14, 3.15.18, 3.14.23. This vulnerability was reported via the GitHub Bug Bounty program.",
      "affected": [
        {
          "vendor": "GitHub",
          "product": "Enterprise Server",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.19.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.19.1",
              "changes": [
                {
                  "at": "3.19.2",
                  "status": "unaffected"
                }
              ]
            },
            {
              "version": "3.18.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.18.4",
              "changes": [
                {
                  "at": "3.18.5",
                  "status": "unaffected"
                }
              ]
            },
            {
              "version": "3.17.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.17.10",
              "changes": [
                {
                  "at": "3.17.11",
                  "status": "unaffected"
                }
              ]
            },
            {
              "version": "3.16.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.16.13",
              "changes": [
                {
                  "at": "3.16.14",
                  "status": "unaffected"
                }
              ]
            },
            {
              "version": "3.15.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.15.17",
              "changes": [
                {
                  "at": "3.15.18",
                  "status": "unaffected"
                }
              ]
            },
            {
              "version": "3.14.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.14.22",
              "changes": [
                {
                  "at": "3.14.23",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  }
}