Vulnerability-Lookup

CNVD-2026-17481

Vulnerability from cnvd - Published: 2026-04-16

Title

Discourse存在未明漏洞（CNVD-2026-17481）

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存在安全漏洞，该漏洞是由于对已删除帖子索引端点进行了过于宽泛的授权检查，攻击者可利用该漏洞导致具有提升群组成员资格的非工作人员用户可访问任何用户的已删除帖子。

Severity

中

Patch Name

Discourse存在未明漏洞（CNVD-2026-17481）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存在安全漏洞，该漏洞是由于对已删除帖子索引端点进行了过于宽泛的授权检查，攻击者可利用该漏洞导致具有提升群组成员资格的非工作人员用户可访问任何用户的已删除帖子。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

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp

Reference

https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp

Impacted products

Name
['Discourse Discourse <2026.1.2', 'Discourse Discourse <2026.2.1', 'Discourse Discourse <2026.3.0-latest.1']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-33428",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-33428"
    }
  },
  "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\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u662f\u7531\u4e8e\u5bf9\u5df2\u5220\u9664\u5e16\u5b50\u7d22\u5f15\u7aef\u70b9\u8fdb\u884c\u4e86\u8fc7\u4e8e\u5bbd\u6cdb\u7684\u6388\u6743\u68c0\u67e5\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u5177\u6709\u63d0\u5347\u7fa4\u7ec4\u6210\u5458\u8d44\u683c\u7684\u975e\u5de5\u4f5c\u4eba\u5458\u7528\u6237\u53ef\u8bbf\u95ee\u4efb\u4f55\u7528\u6237\u7684\u5df2\u5220\u9664\u5e16\u5b50\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttps://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-17481",
  "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\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u662f\u7531\u4e8e\u5bf9\u5df2\u5220\u9664\u5e16\u5b50\u7d22\u5f15\u7aef\u70b9\u8fdb\u884c\u4e86\u8fc7\u4e8e\u5bbd\u6cdb\u7684\u6388\u6743\u68c0\u67e5\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u5177\u6709\u63d0\u5347\u7fa4\u7ec4\u6210\u5458\u8d44\u683c\u7684\u975e\u5de5\u4f5c\u4eba\u5458\u7528\u6237\u53ef\u8bbf\u95ee\u4efb\u4f55\u7528\u6237\u7684\u5df2\u5220\u9664\u5e16\u5b50\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\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2026-17481\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Discourse Discourse \u003c2026.1.2",
      "Discourse Discourse \u003c2026.2.1",
      "Discourse Discourse \u003c2026.3.0-latest.1"
    ]
  },
  "referenceLink": "https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp",
  "serverity": "\u4e2d",
  "submitTime": "2026-03-24",
  "title": "Discourse\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2026-17481\uff09"
}

CVE-2026-33428 (GCVE-0-2026-33428)

Vulnerability from cvelistv5 – Published: 2026-03-20 23:21 – Updated: 2026-03-25 13:42

Title

Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership

Summary

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

Severity ?

4.9 (Medium)


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

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M

References

URL

Tags

https://github.com/discourse/discourse/security/a…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	discourse	discourse	Affected: = 2026.3.0-latest Affected: >= 2026.2.0-latest, < 2026.2.1 Affected: >= 2026.1.0-latest, < 2026.1.2

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33428",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-25T13:42:46.677298Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-25T13:42:54.320Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "discourse",
          "vendor": "discourse",
          "versions": [
            {
              "status": "affected",
              "version": "= 2026.3.0-latest"
            },
            {
              "status": "affected",
              "version": "\u003e= 2026.2.0-latest, \u003c 2026.2.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 2026.1.0-latest, \u003c 2026.1.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 4.9,
            "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:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-20T23:21:20.877Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp"
        }
      ],
      "source": {
        "advisory": "GHSA-frcw-p4mc-x6mp",
        "discovery": "UNKNOWN"
      },
      "title": "Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33428",
    "datePublished": "2026-03-20T23:21:20.877Z",
    "dateReserved": "2026-03-19T18:45:22.434Z",
    "dateUpdated": "2026-03-25T13:42:54.320Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2026-17481

CVE-2026-33428 (GCVE-0-2026-33428)

Tags

Sightings

Nomenclature