Flarum Extension Manager 2.0.0-beta.1 before 2.0.0-beta.8 Missing Authorization via Task API

{
  "id": "82bbd7de24f78ae721b550796cd12c1e983fcb36c54140340d2549f7dc64883c",
  "url": "https://osv.dev/vulnerability/CVE-2026-112291",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Flarum Extension Manager 2.0.0-beta.1 before 2.0.0-beta.8 Missing Authorization via Task API",
    "summary": "Flarum Extension Manager 2.0.0-beta.1 before 2.0.0-beta.8 lacks authentication and admin checks on the TaskResource index endpoint, allowing unauthenticated information disclosure. Remote attackers can send GET requests to /api/extension-manager-tasks to read task output revealing filesystem paths, installed extensions, versions, and PHP version.",
    "evidence": "osv:CVE-2026-112291",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-112291",
      "aliases": [
        "CVE-2026-112291"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/flarum/framework",
              "type": "GIT",
              "events": [
                {
                  "introduced": "382991648c9db5d5e17476b55e4f9fe1cac1ea08"
                },
                {
                  "fixed": "d4963509d9bc521d34ca35c9ea40ae0dd927db72"
                },
                {
                  "fixed": "257989e71fd8cc7ddab20f31dcde1aa760b1a08f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.0.0-beta.1"
                      },
                      {
                        "fixed": "2.0.0-beta.8"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "257989e71fd8cc7ddab20f31dcde1aa760b1a08f"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d4963509d9bc521d34ca35c9ea40ae0dd927db72"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.0.0-beta.8"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.0.0-beta.6",
            "v2.0.0-beta.5",
            "v2.0.0-beta.4",
            "v2.0.0-beta.3",
            "v2.0.0-beta.2",
            "v2.0.0-beta.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112291.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.615517610Z",
      "provider": "osv",
      "references": [
        "https://packagist.org",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112291.json",
        "https://github.com/flarum/framework/releases/tag/v2.0.0-beta.8",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-112291",
        "https://www.vulncheck.com/advisories/flarum-extension-manager-2.0.0-beta.1-before-2.0.0-beta.8-missing-authorization-via-task-api",
        "https://github.com/flarum/framework/issues/4386",
        "https://github.com/flarum/framework/commit/257989e71fd8cc7ddab20f31dcde1aa760b1a08f",
        "https://github.com/flarum/framework",
        "https://github.com/flarum/framework/blob/v2.0.0-beta.6/extensions/package-manager/src/Api/Resource/TaskResource.php"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112291.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-112291",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506263,
  "published_at": "2026-10-19T13:55:33.404+00:00"
}