Vulnerability-Lookup

CVE-2023-37252 (GCVE-0-2023-37252)

Vulnerability from cvelistv5 – Published: 2026-09-14 00:00 – Updated: 2026-09-14 05:12

Summary

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.

Severity

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-669 - Incorrect Resource Transfer Between Spheres

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://phabricator.wikimedia.org/T330968

Impacted products

1 product

Vendor	Product	Version	CPE status
MediaWiki	CheckUser	Affected: 0 , < 1.35.11 (semver) Affected: 1.36.0 , < 1.38.7 (semver) Affected: 1.39.0 , < 1.39.4 (semver) cpe:2.3:a:mediawiki:checkuser:::::::: cpe:2.3:a:mediawiki:checkuser:::::::: cpe:2.3:a:mediawiki:checkuser::::::::

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "CheckUser",
          "vendor": "MediaWiki",
          "versions": [
            {
              "lessThan": "1.35.11",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.38.7",
              "status": "affected",
              "version": "1.36.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.39.4",
              "status": "affected",
              "version": "1.39.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.35.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.38.7",
                  "versionStartIncluding": "1.36.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.39.4",
                  "versionStartIncluding": "1.39.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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            }
          ]
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      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-669",
              "description": "CWE-669 Incorrect Resource Transfer Between Spheres",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T05:12:30.342Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://phabricator.wikimedia.org/T330968"
        }
      ],
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  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-37252",
    "datePublished": "2026-09-14T00:00:00.000Z",
    "dateReserved": "2023-06-29T00:00:00.000Z",
    "dateUpdated": "2026-09-14T05:12:30.342Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-37252",
      "date": "2026-09-14",
      "epss": "0.00197",
      "percentile": "0.09576"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-37252\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2026-09-14T05:16:57.580\",\"lastModified\":\"2026-09-14T06:16:52.380\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.\"}],\"affected\":[{\"source\":\"cve@mitre.org\",\"affectedData\":[{\"vendor\":\"MediaWiki\",\"product\":\"CheckUser\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"1.35.11\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"1.36.0\",\"lessThan\":\"1.38.7\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"1.39.0\",\"lessThan\":\"1.39.4\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":3.1,\"baseSeverity\":\"LOW\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.6,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"cve@mitre.org\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-669\"}]}],\"references\":[{\"url\":\"https://phabricator.wikimedia.org/T330968\",\"source\":\"cve@mitre.org\"}]}}"
  }
}

FKIE_CVE-2023-37252

Vulnerability from fkie_nvd - Published: 2026-09-14 05:16 - Updated: 2026-09-14 06:16

Severity

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Summary

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.

References

	URL	Tags
	cve@mitre.org	https://phabricator.wikimedia.org/T330968

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "CheckUser",
          "vendor": "MediaWiki",
          "versions": [
            {
              "lessThan": "1.35.11",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.38.7",
              "status": "affected",
              "version": "1.36.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.39.4",
              "status": "affected",
              "version": "1.39.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden."
    }
  ],
  "id": "CVE-2023-37252",
  "lastModified": "2026-09-14T06:16:52.380",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-14T05:16:57.580",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://phabricator.wikimedia.org/T330968"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-669"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Primary"
    }
  ]
}

GHSA-V83R-4PQQ-R3WJ

Vulnerability from github – Published: 2026-09-14 06:31 – Updated: 2026-09-14 06:31

Details

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.

Severity

3.1 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2023-37252"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-669"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-14T05:16:57Z",
    "severity": "LOW"
  },
  "details": "An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.",
  "id": "GHSA-v83r-4pqq-r3wj",
  "modified": "2026-09-14T06:31:18Z",
  "published": "2026-09-14T06:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37252"
    },
    {
      "type": "WEB",
      "url": "https://phabricator.wikimedia.org/T330968"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2023-37252

Vulnerability from gsd - Updated: 2023-12-13 01:20

Details

** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

Aliases

CVE-2023-37252

Aliases

CVE-2023-37252

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2023-37252",
    "id": "GSD-2023-37252"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-37252"
      ],
      "id": "GSD-2023-37252",
      "modified": "2023-12-13T01:20:24.312957Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2023-37252",
        "STATE": "RESERVED"
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
          }
        ]
      }
    }
  }
}

WID-SEC-W-2023-1695

Vulnerability from csaf_certbund - Published: 2023-07-09 22:00 - Updated: 2023-07-09 22:00

Summary

MediaWiki: Mehrere Schwachstellen

Severity

Hoch

Scope

11 vulnerabilities in this advisory, including CVE-2023-37252.

CVE-2023-37252

In MediaWiki existieren mehrere Schwachstellen. Die Fehler bestehen unter anderem durch eine HTML-Injektion, einen unzulässigen Escape, ein Datenleck und eine Style-Injektion. Ein entfernter, anonymer Angreifer kann diese Schwachstellen ausnutzen, um Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Cross-Site-Scripting-Angriff durchzuführen und Angriffe mit unspezifischen Auswirkungen auszuführen. Die erfolgreiche Ausnutzung einiger dieser Schwachstellen erfordert eine Benutzerinteraktion.

Known affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2023-37252 (GCVE-0-2023-37252)

FKIE_CVE-2023-37252

GHSA-V83R-4PQQ-R3WJ

GSD-2023-37252

WID-SEC-W-2023-1695

Tags

Sightings

Nomenclature