Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2024-10-11 10:50

Modified

2026-09-08 08:34

Summary

Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse

Details

Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users' browsers by sending a maliciously crafted chat message and replying to it. This issue only affects sites with CSP disabled. This problem is patched in the latest version of Discourse. All users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum. Users who do upgrade should also consider enabling a CSP as well as a proactive measure.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "discourse",
        "purl": "pkg:bitnami/discourse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-47772"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users\u0027 browsers by sending a maliciously crafted chat message and replying to it. This issue only affects sites with CSP disabled. This problem is patched in the latest version of Discourse. All users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum. Users who do upgrade should also consider enabling a CSP as well as a proactive measure.",
  "id": "BIT-discourse-2024-47772",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2024-10-11T10:50:47.382Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-67mh-xhmf-c56h"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47772"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse"
}

CVE-2024-47772 (GCVE-0-2024-47772)

Vulnerability from cvelistv5 – Published: 2024-10-07 20:50 – Updated: 2024-10-08 14:26

Title

Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse

Summary

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-08 14:23 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M mitre root Scorecard

References

2 references

URL	Tags
https://github.com/discourse/discourse/security/a…	x_refsource_CONFIRM
https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
discourse	discourse	Affected: stable: < 3.3.2 Affected: tests-passed: < 3.4.0.beta2
discourse	discourse	Affected: 0 , < 3.3.2 (custom) Affected: 0 , < 3.4.0_beta2 (custom) cpe:2.3:a:discourse:discourse:-:::::::*

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:discourse:discourse:-:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "discourse",
            "vendor": "discourse",
            "versions": [
              {
                "lessThan": "3.3.2",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThan": "3.4.0_beta2",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-47772",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-08T14:23:25.185548Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-08T14:26:22.147Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "discourse",
          "vendor": "discourse",
          "versions": [
            {
              "status": "affected",
              "version": "stable: \u003c 3.3.2"
            },
            {
              "status": "affected",
              "version": "tests-passed: \u003c 3.4.0.beta2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users\u0027 browsers by sending a maliciously crafted chat message and replying to it. This issue only affects sites with CSP disabled. This problem is patched in the latest version of Discourse. All users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum. Users who do upgrade should also consider enabling a CSP as well as a proactive measure."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.5,
            "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:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-10-07T20:50:33.324Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/discourse/discourse/security/advisories/GHSA-67mh-xhmf-c56h",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/discourse/discourse/security/advisories/GHSA-67mh-xhmf-c56h"
        },
        {
          "name": "https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP"
        }
      ],
      "source": {
        "advisory": "GHSA-67mh-xhmf-c56h",
        "discovery": "UNKNOWN"
      },
      "title": "Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-47772",
    "datePublished": "2024-10-07T20:50:33.324Z",
    "dateReserved": "2024-09-30T21:28:53.233Z",
    "dateUpdated": "2024-10-08T14:26:22.147Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerability from bitnami_vulndb

CVE-2024-47772 (GCVE-0-2024-47772)

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