Vulnerability-Lookup

CNVD-2026-17485

Vulnerability from cnvd - Published: 2026-04-16

Title

Discourse访问控制错误漏洞（CNVD-2026-17485）

Description

Discourse是Discourse开源的一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在访问控制错误漏洞，该漏洞源于Data Explorer插件中访问控制失败开放，攻击者可利用该漏洞允许任何经过身份验证的用户执行SQL查询。

Severity

中

Patch Name

Discourse访问控制错误漏洞（CNVD-2026-17485）的补丁

Patch Description

Discourse是Discourse开源的一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在访问控制错误漏洞，该漏洞源于Data Explorer插件中访问控制失败开放，攻击者可利用该漏洞允许任何经过身份验证的用户执行SQL查询。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://github.com/discourse/discourse/security/advisories/GHSA-jxrc-72mr-mfh5

Reference

https://github.com/discourse/discourse/security/advisories/GHSA-jxrc-72mr-mfh5

Impacted products

Name
['Discourse Discourse <2025.12.2', 'Discourse Discourse <2026.1.1', 'Discourse Discourse <2026.2.0']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-28218",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-28218"
    }
  },
  "description": "Discourse\u662fDiscourse\u5f00\u6e90\u7684\u4e00\u5957\u5f00\u6e90\u7684\u793e\u533a\u8ba8\u8bba\u5e73\u53f0\u3002\u8be5\u5e73\u53f0\u5305\u62ec\u793e\u533a\u3001\u7535\u5b50\u90ae\u4ef6\u548c\u804a\u5929\u5ba4\u7b49\u529f\u80fd\u3002\n\nDiscourse\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eData Explorer\u63d2\u4ef6\u4e2d\u8bbf\u95ee\u63a7\u5236\u5931\u8d25\u5f00\u653e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5141\u8bb8\u4efb\u4f55\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u7684\u7528\u6237\u6267\u884cSQL\u67e5\u8be2\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://github.com/discourse/discourse/security/advisories/GHSA-jxrc-72mr-mfh5",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-17485",
  "openTime": "2026-04-16",
  "patchDescription": "Discourse\u662fDiscourse\u5f00\u6e90\u7684\u4e00\u5957\u5f00\u6e90\u7684\u793e\u533a\u8ba8\u8bba\u5e73\u53f0\u3002\u8be5\u5e73\u53f0\u5305\u62ec\u793e\u533a\u3001\u7535\u5b50\u90ae\u4ef6\u548c\u804a\u5929\u5ba4\u7b49\u529f\u80fd\u3002\r\n\r\nDiscourse\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eData Explorer\u63d2\u4ef6\u4e2d\u8bbf\u95ee\u63a7\u5236\u5931\u8d25\u5f00\u653e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5141\u8bb8\u4efb\u4f55\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u7684\u7528\u6237\u6267\u884cSQL\u67e5\u8be2\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Discourse\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2026-17485\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Discourse Discourse \u003c2025.12.2",
      "Discourse Discourse \u003c2026.1.1",
      "Discourse Discourse \u003c2026.2.0"
    ]
  },
  "referenceLink": "https://github.com/discourse/discourse/security/advisories/GHSA-jxrc-72mr-mfh5",
  "serverity": "\u4e2d",
  "submitTime": "2026-03-09",
  "title": "Discourse\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2026-17485\uff09"
}

CVE-2026-28218 (GCVE-0-2026-28218)

Vulnerability from cvelistv5 – Published: 2026-02-26 21:23 – Updated: 2026-03-02 21:10

Title

Discourse's Fail-Open Access Control in Data Explorer Plugin Allows Unauthorized SQL Query Execution

Summary

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, fail-open access control in Data Explorer plugin allows any authenticated user to execute SQL queries that have no explicit group assignments, including built-in system queries. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. As a workaround, either explicitly set group permissions on each Data Explorer query that doesn't have permissions, or disable discourse-data-explorer plugin.

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-02 20:58 UTC

CWE

CWE-284 - Improper Access Control

Assigner

GitHub_M mitre root

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
discourse	discourse	Affected: < 2025.12.2 Affected: >= 2026.1.0-latest, < 2026.1.1 Affected: >= 2026.2.0-latest, < 2026.2.0

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-28218",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-02T20:58:54.649323Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-02T21:10:27.953Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "discourse",
          "vendor": "discourse",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2025.12.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 2026.1.0-latest, \u003c 2026.1.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 2026.2.0-latest, \u003c 2026.2.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, fail-open access control in Data Explorer plugin allows any authenticated user to execute SQL queries that have no explicit group assignments, including built-in system queries. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. As a workaround, either explicitly set group permissions on each Data Explorer query that doesn\u0027t have permissions, or disable discourse-data-explorer plugin."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-26T21:23:32.354Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/discourse/discourse/security/advisories/GHSA-jxrc-72mr-mfh5",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/discourse/discourse/security/advisories/GHSA-jxrc-72mr-mfh5"
        }
      ],
      "source": {
        "advisory": "GHSA-jxrc-72mr-mfh5",
        "discovery": "UNKNOWN"
      },
      "title": "Discourse\u0027s Fail-Open Access Control in Data Explorer Plugin Allows Unauthorized SQL Query Execution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-28218",
    "datePublished": "2026-02-26T21:23:32.354Z",
    "dateReserved": "2026-02-25T15:28:40.650Z",
    "dateUpdated": "2026-03-02T21:10:27.953Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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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CNVD-2026-17485

CVE-2026-28218 (GCVE-0-2026-28218)

Tags

Sightings

Nomenclature

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