FKIE_CVE-2025-58055

Vulnerability from fkie_nvd - Published: 2025-10-01 19:15 - Updated: 2026-10-19 17:10
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 community discussion platform. In versions 3.5.0 and below, the Discourse AI suggestion endpoints for topic “Title”, “Category”, and “Tags” allowed authenticated users to extract information about topics that they weren’t authorized to access. By modifying the “topic_id” value in API requests to the AI suggestion endpoints, users could target specific restricted topics. The AI model’s responses then disclosed information that the authenticated user couldn’t normally access. This issue is fixed in version 3.5.1. To workaround this issue, users can restrict group access to the AI helper feature through the "composer_ai_helper_allowed_groups" and "post_ai_helper_allowed_groups" site settings.
References
security-advisories@github.comhttps://github.com/discourse/discourse/commit/28d569cae9b33cd55d647bf41806106e33d975c9Patch
security-advisories@github.comhttps://github.com/discourse/discourse/security/advisories/GHSA-32v2-x274-vfhrVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.vicarius.io/vsociety/posts/cve-2025-58055-detect-discourse-vulnerability
af854a3a-2127-422b-91ae-364da2661108https://www.vicarius.io/vsociety/posts/cve-2025-58055-mitigate-discourse-vulnerability
Impacted products
Vendor Product Version
discourse discourse *
discourse discourse *
discourse discourse 3.6.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "discourse",
          "vendor": "discourse",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.5.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*",
              "matchCriteriaId": "7D473258-2950-4A33-B2A4-ADA9152AC790",
              "versionEndExcluding": "3.5.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*",
              "matchCriteriaId": "4C433F55-3787-4B9E-8028-ED55F6B9056B",
              "versionEndExcluding": "3.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:3.6.0:beta1:*:*:beta:*:*:*",
              "matchCriteriaId": "C11E39E0-7F3D-4DBA-A8AD-7440BCEBB984",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Discourse is an open-source community discussion platform. In versions 3.5.0 and below, the Discourse AI suggestion endpoints for topic \u201cTitle\u201d, \u201cCategory\u201d, and \u201cTags\u201d allowed authenticated users to extract information about topics that they weren\u2019t authorized to access. By modifying the \u201ctopic_id\u201d value in API requests to the AI suggestion endpoints, users could target specific restricted topics. The AI model\u2019s responses then disclosed information that the authenticated user couldn\u2019t normally access. This issue is fixed in version 3.5.1. To workaround this issue, users can restrict group access to the AI helper feature through the \"composer_ai_helper_allowed_groups\" and \"post_ai_helper_allowed_groups\" site settings."
    },
    {
      "lang": "es",
      "value": "Discourse es una plataforma de discusi\u00f3n comunitaria de c\u00f3digo abierto. En las versiones 3.5.0 e inferiores, los puntos finales de sugerencia de IA de Discourse para el \u0027T\u00edtulo\u0027, la \u0027Categor\u00eda\u0027 y las \u0027Etiquetas\u0027 del tema permit\u00edan a los usuarios autenticados extraer informaci\u00f3n sobre temas a los que no estaban autorizados a acceder. Al modificar el valor \u0027topic_id\u0027 en las solicitudes de API a los puntos finales de sugerencia de IA, los usuarios pod\u00edan dirigir temas restringidos espec\u00edficos. Las respuestas del modelo de IA entonces revelaban informaci\u00f3n a la que el usuario autenticado no pod\u00eda acceder normalmente. Este problema est\u00e1 solucionado en la versi\u00f3n 3.5.1. Como soluci\u00f3n alternativa a este problema, los usuarios pueden restringir el acceso de grupos a la funci\u00f3n de asistente de IA a trav\u00e9s de las configuraciones del sitio \u0027composer_ai_helper_allowed_groups\u0027 y \u0027post_ai_helper_allowed_groups\u0027."
    }
  ],
  "id": "CVE-2025-58055",
  "lastModified": "2026-10-19T17:10:00.173",
  "metrics": {
    "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-58055",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-01T18:56:22.028205Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-10-01T19:15:36.317",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/discourse/discourse/commit/28d569cae9b33cd55d647bf41806106e33d975c9"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-32v2-x274-vfhr"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-58055-detect-discourse-vulnerability"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-58055-mitigate-discourse-vulnerability"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        },
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.