{"items":[{"id":"NVI-00003083","kind":"vulnerability","title":"Winter: ImportExportController AJAX handlers bypass granular import/export permission gate","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-fm29-4mq3-phg6"],"plain_summary":"GitHub lists this reviewed advisory for winter/wn-backend-module. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4991d79c896d47b9cdea1dabbd95f71e"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 1.2.14 for winter/wn-backend-module. Confirm the publisher’s latest guidance.","source_ids":["sr-322c3e42d1a47023df534913a62e576e"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-21T19:10:21.000Z","value":"8.3 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4991d79c896d47b9cdea1dabbd95f71e"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-4991d79c896d47b9cdea1dabbd95f71e","url":"https://github.com/advisories/GHSA-fm29-4mq3-phg6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-fm29-4mq3-phg6","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:46.713Z"},{"id":"sr-322c3e42d1a47023df534913a62e576e","url":"https://github.com/advisories/GHSA-fm29-4mq3-phg6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-fm29-4mq3-phg6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.405Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4991d79c896d47b9cdea1dabbd95f71e"],"technology":"winter/wn-backend-module","known_exclusions":[],"conditions_summary":"### Impact\n\nAffected versions of Winter CMS did not enforce the `ImportExportController` behavior's granular access control on the handlers that actually perform the work.\n\nThe behavior supports per-operation access control through the `import[permissions]` and `export[permissions]` configuration keys, enforced by `userHasAccess()`. That check was applied only to the `import()` and `export()` page actions.\n\n`Backend\\Classes\\Controller::execAjaxHandlers()` dispatches AJAX handlers and returns *before* `execPageAction()` runs, and the behavior binds its import and export form widgets in its constructor on every request to the controller. The handlers were therefore fully functional without the gated page action ever executing, and none of them carried the check:\n\n- `onImport()` — reaches `$model->import()` with attacker-supplied column mappings\n- `onImportLoadForm()`\n- `onImportLoadColumnSampleForm()`\n- `onExport()` — reaches `$model->export()`\n- `onExportLoadForm()`\n- `download()` — streams a completed export file\n\nAn authenticated backend user who could reach such a controller through its coarse `$requiredPermissions`, but who was denied the granular import or export permission, co","public_affected_ranges":["<= 1.2.13"]},{"certainty":"source_listed","source_ids":["sr-322c3e42d1a47023df534913a62e576e"],"technology":"winter/wn-backend-module","known_exclusions":[],"conditions_summary":"### Impact\n\nAffected versions of Winter CMS did not enforce the `ImportExportController` behavior's granular access control on the handlers that actually perform the work.\n\nThe behavior supports per-operation access control through the `import[permissions]` and `export[permissions]` configuration keys, enforced by `userHasAccess()`. That check was applied only to the `import()` and `export()` page actions.\n\n`Backend\\Classes\\Controller::execAjaxHandlers()` dispatches AJAX handlers and returns *before* `execPageAction()` runs, and the behavior binds its import and export form widgets in its constructor on every request to the controller. The handlers were therefore fully functional without the gated page action ever executing, and none of them carried the check:\n\n- `onImport()` — reaches `$model->import()` with attacker-supplied column mappings\n- `onImportLoadForm()`\n- `onImportLoadColumnSampleForm()`\n- `onExport()` — reaches `$model->export()`\n- `onExportLoadForm()`\n- `download()` — streams a completed export file\n\nAn authenticated backend user who could reach such a controller through its coarse `$requiredPermissions`, but who was denied the granular import or export permission, co","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.2.14"]}],"null_published_at":"2026-11-02T10:00:37.208Z","source_updated_at":"2026-08-21T19:10:21.000Z","source_disclosed_at":"2026-08-20T18:44:50.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:20.405Z"},{"id":"NVI-00003083","kind":"vulnerability","title":"Winter: ImportExportController AJAX handlers bypass granular import/export permission gate","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-fm29-4mq3-phg6"],"plain_summary":"OSV carries this publisher advisory for winter/wn-backend-module. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 1.2.14 for winter/wn-backend-module. Confirm the publisher’s latest guidance.","source_ids":["sr-322c3e42d1a47023df534913a62e576e"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-322c3e42d1a47023df534913a62e576e","url":"https://github.com/advisories/GHSA-fm29-4mq3-phg6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-fm29-4mq3-phg6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.405Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-322c3e42d1a47023df534913a62e576e"],"technology":"winter/wn-backend-module","known_exclusions":[],"conditions_summary":"### Impact\n\nAffected versions of Winter CMS did not enforce the `ImportExportController` behavior's granular access control on the handlers that actually perform the work.\n\nThe behavior supports per-operation access control through the `import[permissions]` and `export[permissions]` configuration keys, enforced by `userHasAccess()`. That check was applied only to the `import()` and `export()` page actions.\n\n`Backend\\Classes\\Controller::execAjaxHandlers()` dispatches AJAX handlers and returns *before* `execPageAction()` runs, and the behavior binds its import and export form widgets in its constructor on every request to the controller. The handlers were therefore fully functional without the gated page action ever executing, and none of them carried the check:\n\n- `onImport()` — reaches `$model->import()` with attacker-supplied column mappings\n- `onImportLoadForm()`\n- `onImportLoadColumnSampleForm()`\n- `onExport()` — reaches `$model->export()`\n- `onExportLoadForm()`\n- `download()` — streams a completed export file\n\nAn authenticated backend user who could reach such a controller through its coarse `$requiredPermissions`, but who was denied the granular import or export permission, co","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.2.14"]}],"null_published_at":"2026-10-31T22:12:38.474Z","source_updated_at":"2026-08-21T19:15:07.717Z","source_disclosed_at":"2026-08-20T18:44:50.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:42:20.405Z"}],"next_cursor":null,"snapshot_revision":"42594"}