FKIE_CVE-2021-32788

Vulnerability from fkie_nvd - Published: 2021-07-27 22:15 - Updated: 2026-06-17 03:53
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
Discourse is an open source discussion platform. In versions prior to 2.7.7 there are two bugs which led to the post creator of a whisper post being revealed to non-staff users. 1: Staff users that creates a whisper post in a personal message is revealed to non-staff participants of the personal message even though the whisper post cannot be seen by them. 2: When a whisper post is before the last post in a post stream, deleting the last post will result in the creator of the whisper post to be revealed to non-staff users as the last poster of the topic.
References
security-advisories@github.comhttps://github.com/discourse/discourse/commit/680024f9071b7696e5a444a58791016c6dc1f1e5Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/discourse/discourse/commit/dbdf61196d9e964e8823793d2e7f856595fea4d9Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/discourse/discourse/security/advisories/GHSA-v6xg-q577-vc92Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/discourse/discourse/commit/680024f9071b7696e5a444a58791016c6dc1f1e5Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/discourse/discourse/commit/dbdf61196d9e964e8823793d2e7f856595fea4d9Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/discourse/discourse/security/advisories/GHSA-v6xg-q577-vc92Third Party Advisory
Impacted products
Vendor Product Version
discourse discourse *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "discourse",
          "vendor": "discourse",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.7.7"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "82A850D1-D4B4-47EC-A60C-22A1823962ED",
              "versionEndExcluding": "2.7.7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Discourse is an open source discussion platform. In versions prior to 2.7.7 there are two bugs which led to the post creator of a whisper post being revealed to non-staff users. 1: Staff users that creates a whisper post in a personal message is revealed to non-staff participants of the personal message even though the whisper post cannot be seen by them. 2: When a whisper post is before the last post in a post stream, deleting the last post will result in the creator of the whisper post to be revealed to non-staff users as the last poster of the topic."
    },
    {
      "lang": "es",
      "value": "Discourse es una plataforma de debate de c\u00f3digo abierto. En las versiones anteriores a 2.7.7 se presentan dos bugs que conllevaron a que el creador de una publicaci\u00f3n whisper fuera revelado a usuarios que no eran del personal. 1: Unos usuarios del personal que crean una publicaci\u00f3n whisper en un mensaje personal son revelados a participantes del mensaje personal que no son del personal, aunque la publicaci\u00f3n whisper no puede ser vista por ellos. 2: Cuando una publicaci\u00f3n whisper es anterior al \u00faltimo mensaje en un flujo de mensajes, eliminando la \u00faltima publicaci\u00f3n resultar\u00e1 en que el creador del mensaje whisper sea revelado a usuarios no pertenecientes al personal como el \u00faltimo mensaje del tema"
    }
  ],
  "id": "CVE-2021-32788",
  "lastModified": "2026-06-17T03:53:37.867",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "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": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "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": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-07-27T22:15:07.597",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/commit/680024f9071b7696e5a444a58791016c6dc1f1e5"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/commit/dbdf61196d9e964e8823793d2e7f856595fea4d9"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-v6xg-q577-vc92"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/commit/680024f9071b7696e5a444a58791016c6dc1f1e5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/commit/dbdf61196d9e964e8823793d2e7f856595fea4d9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-v6xg-q577-vc92"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-668"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-668"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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