Vulnerability-Lookup

FKIE_CVE-2022-23549

Vulnerability from fkie_nvd - Published: 2023-01-05 19:15 - Updated: 2026-06-17 04:30

Severity

5.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, users can create posts with raw body longer than the `max_length` site setting by including html comments that are not counted toward the character limit. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds.

References

URL	Tags
security-advisories@github.com	https://github.com/discourse/discourse/commit/bf6b08670a927cc80bb090b7a2e710b4b554e6a8	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/discourse/discourse/security/advisories/GHSA-p47g-v5wr-p4xp	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/discourse/discourse/commit/bf6b08670a927cc80bb090b7a2e710b4b554e6a8	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/discourse/discourse/security/advisories/GHSA-p47g-v5wr-p4xp	Third Party Advisory

Impacted products

Vendor	Product	Version
discourse	discourse	*
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	2.9.0
discourse	discourse	3.0.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "discourse",
          "vendor": "discourse",
          "versions": [
            {
              "lessThan": "2.8.14",
              "status": "affected",
              "version": "2.8.14",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2.9.0.beta0",
              "status": "affected",
              "version": "2.9.0.beta0",
              "versionType": "custom"
            },
            {
              "lessThan": "2.9.0.beta16",
              "status": "affected",
              "version": "2.9.0.beta16",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9C13BCBA-EF34-4F4B-9F4A-33392EB45196",
              "versionEndExcluding": "2.8.14",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta1:*:*:*:*:*:*",
              "matchCriteriaId": "B3803EF9-A296-42B7-887F-93C5E68E94C4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta10:*:*:*:*:*:*",
              "matchCriteriaId": "35BAC488-3622-4B0B-B8EA-879E8C68E8CF",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta11:*:*:*:*:*:*",
              "matchCriteriaId": "406A23B4-B971-4DC8-A132-EE9854FE8546",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta12:*:*:*:*:*:*",
              "matchCriteriaId": "1DD3C47F-E49F-4E19-9EA7-A322C4CFD541",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta13:*:*:*:*:*:*",
              "matchCriteriaId": "E924AC08-6978-4DFF-B616-9E3E9D6FBE1B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta14:*:*:*:*:*:*",
              "matchCriteriaId": "B5A3C7FB-B3B6-45F0-AD7D-062A50490AD7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta2:*:*:*:*:*:*",
              "matchCriteriaId": "8BA3D313-3C11-43E2-A47D-CBB532D1B6F8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta3:*:*:*:*:*:*",
              "matchCriteriaId": "6F42673E-65F3-4807-9484-20CB747420FB",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta4:*:*:*:*:*:*",
              "matchCriteriaId": "0B91D023-FCE5-4866-AD8B-BBB675763104",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta5:*:*:*:*:*:*",
              "matchCriteriaId": "0086484D-0164-449C-8AAE-BE7479CB9706",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta6:*:*:*:*:*:*",
              "matchCriteriaId": "F9D1B031-96C7-44C0-A0A0-F67ABE55C93C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta7:*:*:*:*:*:*",
              "matchCriteriaId": "750D2AD9-35E7-4AC7-9C22-AA90DAA34F3F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2.9.0:beta8:*:*:*:*:*:*",
              "matchCriteriaId": "B68E308A-BDAB-4614-A563-4460F7996CBE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:3.0.0:beta15:*:*:*:*:*:*",
              "matchCriteriaId": "F62275F8-11E9-4D94-8F2E-F83905F65031",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, users can create posts with raw body longer than the `max_length` site setting by including html comments that are not counted toward the character limit. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds."
    },
    {
      "lang": "es",
      "value": "Discourse es una plataforma de discusi\u00f3n de fuentes de opciones. Antes de la versi\u00f3n 2.8.14 en la rama `stable` y la versi\u00f3n 2.9.0.beta16 en las ramas `beta` y `tests-passed`, los usuarios pod\u00edan crear publicaciones con un cuerpo sin formato m\u00e1s largo que la configuraci\u00f3n del sitio `max_length` al incluir html comentarios que no cuentan para el l\u00edmite de caracteres. Este problema se solucion\u00f3 en las versiones 2.8.14 y 2.9.0.beta16. No se conocen workarounds."
    }
  ],
  "id": "CVE-2022-23549",
  "lastModified": "2026-06-17T04:30:20.250",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 5.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-23549",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-03-10T21:00:30.999857Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-01-05T19:15:09.500",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/commit/bf6b08670a927cc80bb090b7a2e710b4b554e6a8"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-p47g-v5wr-p4xp"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/commit/bf6b08670a927cc80bb090b7a2e710b4b554e6a8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-p47g-v5wr-p4xp"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2022-23549 (GCVE-0-2022-23549)

Vulnerability from cvelistv5 – Published: 2023-01-05 00:00 – Updated: 2025-03-10 21:32

Title

Discourse vulnerable to bypass of post max_length using HTML comments

Summary

Severity

5.7 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-10 21:00 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

GitHub_M mitre root Scorecard

References

2 references

URL	Tags
https://github.com/discourse/discourse/commit/bf6…
https://github.com/discourse/discourse/security/a…

Impacted products

1 product

Vendor	Product	Version
discourse	discourse	Affected: 2.8.14 , < 2.8.14 (custom) Affected: 2.9.0.beta0 , ≤ 2.9.0.beta0 (custom) Affected: 2.9.0.beta16 , < 2.9.0.beta16 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T03:43:46.454Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/discourse/discourse/commit/bf6b08670a927cc80bb090b7a2e710b4b554e6a8"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/discourse/discourse/security/advisories/GHSA-p47g-v5wr-p4xp"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-23549",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-10T21:00:30.999857Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-10T21:32:15.478Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "discourse",
          "vendor": "discourse",
          "versions": [
            {
              "lessThan": "2.8.14",
              "status": "affected",
              "version": "2.8.14",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2.9.0.beta0",
              "status": "affected",
              "version": "2.9.0.beta0",
              "versionType": "custom"
            },
            {
              "lessThan": "2.9.0.beta16",
              "status": "affected",
              "version": "2.9.0.beta16",
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          ]
        }
      ],
      "descriptions": [
        {
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "CWE-20 Improper Input Validation",
              "lang": "en",
              "type": "CWE"
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      ],
      "providerMetadata": {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      },
      "references": [
        {
          "url": "https://github.com/discourse/discourse/commit/bf6b08670a927cc80bb090b7a2e710b4b554e6a8"
        },
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          "url": "https://github.com/discourse/discourse/security/advisories/GHSA-p47g-v5wr-p4xp"
        }
      ],
      "source": {
        "advisory": "GHSA-p47g-v5wr-p4xp",
        "defect": [
          "GHSA-p47g-v5wr-p4xp"
        ],
        "discovery": "UNKNOWN"
      },
      "title": "Discourse vulnerable to bypass of post max_length using HTML comments",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-23549",
    "datePublished": "2023-01-05T00:00:00.000Z",
    "dateReserved": "2022-01-19T00:00:00.000Z",
    "dateUpdated": "2025-03-10T21:32:15.478Z",
    "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.

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.

Action not permitted

FKIE_CVE-2022-23549

CVE-2022-23549 (GCVE-0-2022-23549)

Tags

Sightings

Nomenclature

Related by attack behaviour