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CVE-2026-18228

Status: ReceivedHigh (7.1)—

HyperScale contained a path traversal issue affecting information disclosure. Software customers upgrade to resolved maintenance release. Update Commvault installation of HyperScale MediaAgents.

CVSS

Exploitation probability (EPSS)

FIRST hasn't scored this CVE yet (usual for very recent or rejected CVEs).

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

El vector CVSS indica red con privilegios bajos (PR:L) y sin interacción; la descripción menciona path traversal con divulgación de información, sin detallar el mecanismo exacto.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Commvault — HyperscaleAI

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-18228",
  "cveTags": [],
  "metrics": {
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "050066fd-a2f9-4f32-ab5d-4c53f48bc333",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 7.1,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "050066fd-a2f9-4f32-ab5d-4c53f48bc333",
      "affectedData": [
        {
          "vendor": "Commvault",
          "product": "Commvault Cloud",
          "versions": [
            {
              "status": "affected",
              "changes": [
                {
                  "at": "11.46.30",
                  "status": "unaffected"
                }
              ],
              "version": "11.46.0",
              "versionType": "custom",
              "lessThanOrEqual": "11.46.29"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "11.44.25",
                  "status": "unaffected"
                }
              ],
              "version": "11.44.0",
              "versionType": "custom",
              "lessThanOrEqual": "11.44.24"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "11.40.78",
                  "status": "unaffected"
                }
              ],
              "version": "11.40.0",
              "versionType": "custom",
              "lessThanOrEqual": "11.40.77"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "11.36.127",
                  "status": "unaffected"
                }
              ],
              "version": "11.36.0",
              "versionType": "custom",
              "lessThanOrEqual": "11.36.126"
            }
          ],
          "platforms": [
            "Windows",
            "Linux"
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2026-10-13T15:17:44.103",
  "references": [
    {
      "url": "https://documentation.commvault.com/securityadvisories/CV_2026_10_8.html",
      "source": "050066fd-a2f9-4f32-ab5d-4c53f48bc333"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "HyperScale contained a path traversal issue affecting information disclosure.  Software customers upgrade to resolved maintenance release. Update Commvault installation of HyperScale MediaAgents."
    }
  ],
  "lastModified": "2026-10-13T15:17:44.103",
  "sourceIdentifier": "050066fd-a2f9-4f32-ab5d-4c53f48bc333"
}