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CVE-2025-6590

Status: DeferredMedium (4.6)—

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLUserTextField.Php.

This issue affects MediaWiki: from * through 1.39.12, 1.42.76 1.43.1, 1.44.0.

CVSS

Exploitation probability (EPSS)

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).

Affected technologies (1)

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

Wikimedia — MediawikiAI

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2025-6590",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-6590",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-03T21:11:34.380217Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 4.6,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:H/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": "ACTIVE",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "HIGH",
          "vulnConfidentialityImpact": "LOW",
          "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": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
      "affectedData": [
        {
          "repo": "https://gerrit.wikimedia.org/g/mediawiki/core/+/refs/heads/master",
          "vendor": "Wikimedia Foundation",
          "product": "MediaWiki",
          "versions": [
            {
              "status": "affected",
              "version": "*",
              "versionType": "semver",
              "lessThanOrEqual": "1.39.12, 1.42.76 1.43.1, 1.44.0"
            }
          ],
          "programFiles": [
            "includes/htmlform/fields/HTMLUserTextField.php"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-02-02T23:16:01.503",
  "references": [
    {
      "url": "https://phabricator.wikimedia.org/T392746",
      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLUserTextField.Php.\n\nThis issue affects MediaWiki: from * through 1.39.12, 1.42.76 1.43.1, 1.44.0."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de Exposición de Información Sensible a un Actor No Autorizado en Wikimedia Foundation MediaWiki. Esta vulnerabilidad está asociada con los archivos de programa includes/htmlform/fields/HTMLUserTextField.PHP.\n\nEste problema afecta a MediaWiki: desde * hasta 1.39.12, 1.42.76 1.43.1, 1.44.0."
    }
  ],
  "lastModified": "2026-06-17T10:02:12.390",
  "sourceIdentifier": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"
}