{
  "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-2026-12391",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-12391",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-16T12:17:01.094Z",
    "updatedAt": "2026-07-16T13:28:19.156Z",
    "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": "ubuntu-pro-client Local Privilege Escalation and Information Disclosure via Symlink Arbitrary File Read in collect-logs",
      "summary": "An insecure symlink following vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools) within the pro collect-logs command framework. The utility creates or utilizes predictable temporary file paths or user-accessible log directories when gathering diagnostic information without verifying the file type or ownership. An unprivileged local attacker can exploit this behavior by creating a symbolic link (symlink) at a predictable destination path pointing to an arbitrary, root-readable file (such as /etc/shadow or private files within /root). When a root administrator or operator subsequently executes the pro collect-logs command, the tool follows the user-controlled symlink, reads the target file, and compresses its contents into the resulting diagnostic support archive. Because the output archive remains readable by the unprivileged user, the attacker can extract and read the sensitive root-owned files, leading to a complete information disclosure of system secrets.",
      "affected": [
        {
          "vendor": "Canonical",
          "product": "ubuntu-pro-client (ubuntu-advantage-tools)",
          "packageName": "ubuntu-pro-client",
          "collectionURL": "https://github.com/canonical/",
          "platforms": [
            "Linux"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "python",
              "lessThan": "37.3"
            }
          ]
        },
        {
          "vendor": "Canonical",
          "product": "Ubuntu 26.04 LTS",
          "packageName": "ubuntu-advantage-tools",
          "collectionURL": "https://launchpad.net/ubuntu/resolute",
          "platforms": [
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "37.2ubuntu0.1",
              "status": "unaffected",
              "versionType": "dpkg"
            }
          ]
        },
        {
          "vendor": "Canonical",
          "product": "Ubuntu 24.04 LTS",
          "packageName": "ubuntu-advantage-tools",
          "collectionURL": "https://launchpad.net/ubuntu/noble",
          "platforms": [
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "37.2ubuntu~24.04.1",
              "status": "unaffected",
              "versionType": "dpkg"
            }
          ]
        },
        {
          "vendor": "Canonical",
          "product": "Ubuntu 22.04 LTS",
          "packageName": "ubuntu-advantage-tools",
          "collectionURL": "https://launchpad.net/ubuntu/jammy",
          "platforms": [
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "37.2ubuntu~22.04.1",
              "status": "unaffected",
              "versionType": "dpkg"
            }
          ]
        },
        {
          "vendor": "Canonical",
          "product": "Ubuntu 20.04 LTS",
          "packageName": "ubuntu-advantage-tools",
          "collectionURL": "https://launchpad.net/ubuntu/focal",
          "platforms": [
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "37.1ubuntu0~20.04.1",
              "status": "unaffected",
              "versionType": "dpkg"
            }
          ]
        },
        {
          "vendor": "Canonical",
          "product": "Ubuntu 18.04 LTS",
          "packageName": "ubuntu-advantage-tools",
          "collectionURL": "https://launchpad.net/ubuntu/bionic",
          "platforms": [
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "37.1ubuntu0~18.04.1",
              "status": "unaffected",
              "versionType": "dpkg"
            }
          ]
        },
        {
          "vendor": "Canonical",
          "product": "Ubuntu 16.04 LTS",
          "packageName": "ubuntu-advantage-tools",
          "collectionURL": "https://launchpad.net/ubuntu/xenial",
          "platforms": [
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "37.1ubuntu0~16.04.1",
              "status": "unaffected",
              "versionType": "dpkg"
            }
          ]
        }
      ]
    }
  }
}