Vulnerability-Lookup

GHSA-5V56-6X55-VHPV

Vulnerability from github – Published: 2026-01-09 18:31 – Updated: 2026-01-09 18:31

Details

Missing Authorization vulnerability in Wikimedia Foundation MediaWiki - CampaignEvents extension allows Privilege Abuse.This issue affects MediaWiki - CampaignEvents extension: 1.45, 1.44, 1.43, 1.39.

Severity ?

5.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-0817"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-09T16:16:08Z",
    "severity": "MODERATE"
  },
  "details": "Missing Authorization vulnerability in Wikimedia Foundation MediaWiki - CampaignEvents extension allows Privilege Abuse.This issue affects MediaWiki - CampaignEvents extension: 1.45, 1.44, 1.43, 1.39.",
  "id": "GHSA-5v56-6x55-vhpv",
  "modified": "2026-01-09T18:31:36Z",
  "published": "2026-01-09T18:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0817"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/I7ed0049691258c8bd2555e599b9b88490fbe3358"
    },
    {
      "type": "WEB",
      "url": "https://phabricator.wikimedia.org/T410560"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-0817 (GCVE-0-2026-0817)

Vulnerability from cvelistv5 – Published: 2026-01-09 15:50 – Updated: 2026-01-09 17:37

Title

CampaignEvents API missing authorization exposes meeting and chat URLs

Summary

Severity ?

5.3 (Medium)


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

CWE

CWE-862 - Missing Authorization

Assigner

wikimedia-foundation

References

URL

Tags

	https://phabricator.wikimedia.org/T410560
	https://gerrit.wikimedia.org/r/q/I7ed0049691258c8…

Impacted products

	Vendor	Product	Version
	Wikimedia Foundation	MediaWiki - CampaignEvents extension	Affected: 1.45 Affected: 1.44 Affected: 1.43 Affected: 1.39

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-0817",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-09T17:35:46.425216Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-09T17:37:36.036Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "MediaWiki - CampaignEvents extension",
          "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/CampaignEvents",
          "vendor": "Wikimedia Foundation",
          "versions": [
            {
              "status": "affected",
              "version": "1.45"
            },
            {
              "status": "affected",
              "version": "1.44"
            },
            {
              "status": "affected",
              "version": "1.43"
            },
            {
              "status": "affected",
              "version": "1.39"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Missing Authorization vulnerability in Wikimedia Foundation MediaWiki - CampaignEvents extension allows Privilege Abuse.\u003cp\u003eThis issue affects MediaWiki - CampaignEvents extension: 1.45, 1.44, 1.43, 1.39.\u003c/p\u003e"
            }
          ],
          "value": "Missing Authorization vulnerability in Wikimedia Foundation MediaWiki - CampaignEvents extension allows Privilege Abuse.This issue affects MediaWiki - CampaignEvents extension: 1.45, 1.44, 1.43, 1.39."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-122",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-122 Privilege Abuse"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-09T15:50:50.616Z",
        "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
        "shortName": "wikimedia-foundation"
      },
      "references": [
        {
          "url": "https://phabricator.wikimedia.org/T410560"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/q/I7ed0049691258c8bd2555e599b9b88490fbe3358"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CampaignEvents API missing authorization exposes meeting and chat URLs",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
    "assignerShortName": "wikimedia-foundation",
    "cveId": "CVE-2026-0817",
    "datePublished": "2026-01-09T15:50:50.616Z",
    "dateReserved": "2026-01-09T15:44:08.294Z",
    "dateUpdated": "2026-01-09T17:37:36.036Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-5V56-6X55-VHPV

CVE-2026-0817 (GCVE-0-2026-0817)

Tags

Sightings

Nomenclature