Discourse has a subscription access bypass in its discourse-subscriptions plugin

{
  "id": "1089026b528edda2a6e7a9777b02109e61c1f76e25e8d3075be52c93e63bb91e",
  "url": "https://osv.dev/vulnerability/CVE-2026-34154",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Discourse has a subscription access bypass in its discourse-subscriptions plugin",
    "summary": "Discourse is an open-source discussion platform. In versions prior to 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1, a vulnerability in the discourse-subscriptions plugin allows users to gain access to subscription-gated groups without completing payment. This issue has been fixed in versions 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1.",
    "evidence": "osv:CVE-2026-34154",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-34154",
      "aliases": [
        "BIT-discourse-2026-34154",
        "CVE-2026-34154",
        "GHSA-pjgj-7mjq-6j7g"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/discourse/discourse",
              "type": "GIT",
              "events": [
                {
                  "introduced": "322d3c0ac6a8f133b3f82875e9dbbe310f638c1b"
                },
                {
                  "fixed": "ec5d54b3291729ec201615c64d954545000896b9"
                },
                {
                  "introduced": "896e810e1b296478bba91559a8fc89a9926f11fe"
                },
                {
                  "fixed": "211de17ca39dec7bcb6afebdc9c79cebdc0b4495"
                },
                {
                  "introduced": "fdd750d960e603415db62242eca3c30d68e366db"
                },
                {
                  "fixed": "6bb9b59d5d3f5d0c813187a102318e9e4ae49647"
                },
                {
                  "introduced": "640840d818f4ee9375829ece0ef452923bb0c012"
                },
                {
                  "last_affected": "640840d818f4ee9375829ece0ef452923bb0c012"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2026.1.0"
                      },
                      {
                        "fixed": "2026.1.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2026.3.0"
                      },
                      {
                        "fixed": "2026.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2026.4.0"
                      },
                      {
                        "fixed": "2026.4.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:discourse:discourse:2026.5.0:*:*:*:latest:*:*:*",
                    "range": [
                      {
                        "introduced": "2026.5.0"
                      },
                      {
                        "last_affected": "2026.5.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2026.5.0",
            "v2026.4.0",
            "v2026.5.0-latest",
            "v2026.1.3",
            "v2026.3.0",
            "v2026.4.0-latest",
            "v2026.1.2",
            "v2026.3.0-latest.1",
            "v2026.1.1",
            "v2026.3.0-latest",
            "v2026.1.0",
            "stable",
            "esr",
            "v2026.1.0-latest"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34154.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.328536685Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34154.json",
        "https://github.com/discourse/discourse/security/advisories/GHSA-pjgj-7mjq-6j7g",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-34154"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34154.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-34154",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514116,
  "published_at": "2026-05-19T18:41:55.643+00:00"
}