Vulnerability-Lookup

GHSA-86VF-RP56-MHF8

Vulnerability from github – Published: 2026-04-08 00:30 – Updated: 2026-04-08 00:30

Details

Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure.This issue affects non release branches.

Severity ?

8.8 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L

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{
  "affected": [],
  "aliases": [
    "CVE-2026-39937"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-212"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-07T22:16:24Z",
    "severity": "HIGH"
  },
  "details": "Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure.This issue affects non release branches.",
  "id": "GHSA-86vf-rp56-mhf8",
  "modified": "2026-04-08T00:30:26Z",
  "published": "2026-04-08T00:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39937"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/I0b72427fa329aee85841a2cb23dec3058edce85e"
    },
    {
      "type": "WEB",
      "url": "https://phabricator.wikimedia.org/T418122"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-39937 (GCVE-0-2026-39937)

Vulnerability from cvelistv5 – Published: 2026-04-07 21:44 – Updated: 2026-04-08 21:58

Title

Global vanishing does not completely remove user email

Summary

Severity ?

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L

CWE

CWE-212 - Improper removal of sensitive information before storage or transfer

Assigner

wikimedia-foundation

References

URL

Tags

	https://phabricator.wikimedia.org/T418122
	https://gerrit.wikimedia.org/r/q/I0b72427fa329aee…

Impacted products

	Vendor	Product	Version
	The Wikimedia Foundation	Mediawiki - CentralAuth Extension	Unaffected: 1.43 Unaffected: 1.44 Unaffected: 1.45 Affected: 0 , < 1.43 (custom)

Credits

Urbanecm kostajh

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-39937",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-08T15:22:57.694770Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-08T15:23:06.774Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Mediawiki - CentralAuth Extension",
          "vendor": "The Wikimedia Foundation",
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            },
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            },
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            },
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              "status": "affected",
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            }
          ]
        }
      ],
      "credits": [
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        },
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          "lang": "en",
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          "value": "kostajh"
        }
      ],
      "descriptions": [
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          "supportingMedia": [
            {
              "base64": false,
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              "value": "Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure.\u0026nbsp;\u003cspan\u003eThe issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.\u003c/span\u003e\u003cdiv\u003e\u003cdiv\u003e\u003c/div\u003e\u003c/div\u003e"
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        }
      ],
      "impacts": [
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          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-131 Resource Leak Exposure"
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L",
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            "vulnAvailabilityImpact": "LOW",
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            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      "problemTypes": [
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          "descriptions": [
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              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2026-04-08T21:58:19.900Z",
        "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
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          "url": "https://phabricator.wikimedia.org/T418122"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/q/I0b72427fa329aee85841a2cb23dec3058edce85e"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Global vanishing does not completely remove user email",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
    "assignerShortName": "wikimedia-foundation",
    "cveId": "CVE-2026-39937",
    "datePublished": "2026-04-07T21:44:46.515Z",
    "dateReserved": "2026-04-07T21:25:36.589Z",
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-86VF-RP56-MHF8

CVE-2026-39937 (GCVE-0-2026-39937)

Tags

Sightings

Nomenclature