FKIE_CVE-2026-119555

Vulnerability from fkie_nvd - Published: 2026-10-30 12:16 - Updated: 2026-10-30 19:14
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
Moodle 4.2.0 through 4.5.15, 5.0.0 through 5.0.11, 5.1.0 through 5.1.8, 5.2.0 through 5.2.4, and 5.3.0 contain an information disclosure vulnerability in the core_grades_get_feedback web service. The service lacks group-membership and enrolment checks, so non-editing teachers can iterate userid values to read other groups' grade feedback and users' names and identity fields such as email.
References
disclosure@vulncheck.comhttps://abraxaslabs.tech/research/moodle-grades-feedback-idor
disclosure@vulncheck.comhttps://github.com/moodle/moodle
disclosure@vulncheck.comhttps://github.com/moodle/moodle/blob/v5.3.0/public/grade/classes/external/get_feedback.php#L77-L96
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/moodle-through-5.3.0-5.2.4-5.1.8-5.0.11-and-4.5.15-information-disclosure-via-core-grades-get-feedback
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://git.moodle.org",
          "defaultStatus": "unaffected",
          "packageName": "moodle",
          "packageURL": "pkg:github/moodle/moodle",
          "product": "moodle",
          "repo": "https://github.com/moodle/moodle",
          "vendor": "Moodle Project",
          "versions": [
            {
              "status": "affected",
              "version": "5.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.2.4",
              "status": "affected",
              "version": "5.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.1.8",
              "status": "affected",
              "version": "5.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.0.11",
              "status": "affected",
              "version": "5.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.5.15",
              "status": "affected",
              "version": "4.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Moodle 4.2.0 through 4.5.15, 5.0.0 through 5.0.11, 5.1.0 through 5.1.8, 5.2.0 through 5.2.4, and 5.3.0 contain an information disclosure vulnerability in the core_grades_get_feedback web service. The service lacks group-membership and enrolment checks, so non-editing teachers can iterate userid values to read other groups\u0027 grade feedback and users\u0027 names and identity fields such as email."
    }
  ],
  "id": "CVE-2026-119555",
  "lastModified": "2026-10-30T19:14:38.697",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "disclosure@vulncheck.com",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-30T12:16:42.577",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://abraxaslabs.tech/research/moodle-grades-feedback-idor"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/moodle/moodle"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/moodle/moodle/blob/v5.3.0/public/grade/classes/external/get_feedback.php#L77-L96"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/moodle-through-5.3.0-5.2.4-5.1.8-5.0.11-and-4.5.15-information-disclosure-via-core-grades-get-feedback"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Primary"
    }
  ]
}



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