Cross-tenant IDOR on feature-flag and assist-stats routes via {project_id} case mismatch

{
  "id": "843fdd2a96c77bcf93d674430515ab3afd41d43b129079a23ae2f6fa28f66bc0",
  "url": "https://osv.dev/vulnerability/CVE-2026-45297",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Cross-tenant IDOR on feature-flag and assist-stats routes via {project_id} case mismatch",
    "summary": "OpenReplay is a self-hosted session replay suite. Prior to 1.26.0, there is a cross-tenant IDOR on feature-flag and assist-stats routes via {project_id} case mismatch. ProjectAuthorizer.__call__ (OSS api/auth/auth_project.py:14-38 and EE ee/api/auth/auth_project.py:14-46) only runs projects.is_authorized(project_id, tenant_id, user_id) + projects.get_project(tenant_id, project_id) when self.project_identifier == \"projectId\" (camelCase). For EE multi-tenant, feature-flag queries only filter on project_id, never tenant_id. Any authenticated user in tenant A can read/update/delete feature-flag rows belonging to tenant B by iterating the sequential integer project_id + feature_flag_id. OSS is single-tenant by design ({\"errors\":[\"tenants already registered\"]} on second signup) so there's no cross-tenant impact This vulnerability is fixed in 1.26.0.",
    "evidence": "osv:CVE-2026-45297",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-45297",
      "aliases": [
        "CVE-2026-45297",
        "GHSA-5m23-rcj4-cgjx"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openreplay/openreplay",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "f450d5dbc689f15ea803ee864b5c598f3f013c6d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.26.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.26.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "pre-v1.26.0",
            "pre-v1.25.0",
            "pre-v1.24.0",
            "0.6.17",
            "or-argo-test",
            "pre-v1.22.0",
            "pre-v1.21.0",
            "pre-v1.20.0",
            "v0.5.0",
            "pre-v1.19.0",
            "argo",
            "pre_v1.18.0",
            "v.1.14.0",
            "v1.9.0",
            "v1.5.2",
            "v1.5.1",
            "v1.5.0",
            "v1.4.0",
            "v1.3.6",
            "v1.3.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45297.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.980173106Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45297.json",
        "https://github.com/openreplay/openreplay/security/advisories/GHSA-5m23-rcj4-cgjx",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45297"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-285",
          "CWE-639",
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45297.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45297",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500018,
  "published_at": "2026-05-28T16:50:38.672+00:00"
}