FKIE_CVE-2026-38447

Vulnerability from fkie_nvd - Published: 2026-08-03 19:16 - Updated: 2026-08-31 19:33
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
osTicket 1.18.3 generates API keys using a predictable construction based on MD5 hashing. The use of MD5, combined with predictable inputs such as the current timestamp and client IP address, significantly reduces entropy. An attacker can approximate the key generation time and brute-force the key space within a feasible time window.
References
cve@mitre.orghttps://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38447.md
cve@mitre.orghttps://github.com/osTicket/osTicket/blob/v1.18.3/include/class.api.php#L149
cve@mitre.orghttps://github.com/osTicket/osTicket/blob/v1.18.3/include/class.misc.php
cve@mitre.orghttps://github.com/osTicket/osTicket/commit/feccb6a3a90863fd31215ee738b39762177e658c
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "osTicket 1.18.3 generates API keys using a predictable construction based on MD5 hashing. The use of MD5, combined with predictable inputs such as the current timestamp and client IP address, significantly reduces entropy. An attacker can approximate the key generation time and brute-force the key space within a feasible time window."
    }
  ],
  "id": "CVE-2026-38447",
  "lastModified": "2026-08-31T19:33:11.197",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-38447",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-03T19:33:44.171471Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-03T19:16:46.917",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38447.md"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/osTicket/osTicket/blob/v1.18.3/include/class.api.php#L149"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/osTicket/osTicket/blob/v1.18.3/include/class.misc.php"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/osTicket/osTicket/commit/feccb6a3a90863fd31215ee738b39762177e658c"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-331"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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