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CVE-2026-47263

Estado: AnalizadaMedia (4.3)—

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, the MessageBus.publish call for /web_hook_events/<id> in Jobs::RedeliverWebHookEvents did not pass group_ids, leaving the channel readable by any authenticated user (or anonymous user on instances where login_required is disabled). Webhook IDs are sequential integers and trivially enumerable. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Discourse — Discourse

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-47263",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-47263",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-15T18:46:57.427436Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "discourse",
          "product": "discourse",
          "versions": [
            {
              "status": "affected",
              "version": ">= 2026.1.0-latest, < 2026.1.4"
            },
            {
              "status": "affected",
              "version": ">= 2026.3.0-latest, < 2026.3.1"
            },
            {
              "status": "affected",
              "version": ">= 2026.4.0-latest, < 2026.4.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-06-12T21:16:23.537",
  "references": [
    {
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-wvrm-9v64-m96p",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, the MessageBus.publish call for /web_hook_events/<id> in Jobs::RedeliverWebHookEvents did not pass group_ids, leaving the channel readable by any authenticated user (or anonymous user on instances where login_required is disabled). Webhook IDs are sequential integers and trivially enumerable. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1."
    }
  ],
  "lastModified": "2026-06-17T18:41:27.190",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C4B2317D-D085-4564-8D41-AD4EBA6F61BF",
              "versionEndExcluding": "2026.1.0"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "E82B178E-8F1C-4AD6-A18A-649091C3BCFE",
              "versionEndExcluding": "2026.1.4",
              "versionStartIncluding": "2026.1.0"
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "53A8996E-FEBF-43B0-92E6-38ECC9381013",
              "versionEndExcluding": "2026.3.1",
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            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "CD3531A1-E4CB-42E5-BEE0-80C443DBEDEE",
              "versionEndExcluding": "2026.4.1",
              "versionStartIncluding": "2026.4.0"
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2026.5.0:*:*:*:latest:*:*:*",
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              "matchCriteriaId": "8AD4BB38-1D03-4ECD-BFAB-900D57689A31"
            }
          ],
          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}