{"items":[{"id":"NVI-00016422","kind":"vulnerability","title":"OpenList: Authenticated arbitrary file write via Content-Disposition path traversal in SimpleHttp offline-download tool","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h6cj-26g5-67fv","CVE-2026-75602"],"plain_summary":"GitHub lists this reviewed advisory for github.com/OpenListTeam/OpenList. 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-6f5d32accf13ffaf83e83be6ca10ac73"],"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}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-03T17:37:52.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6f5d32accf13ffaf83e83be6ca10ac73"}],"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-6f5d32accf13ffaf83e83be6ca10ac73","url":"https://github.com/advisories/GHSA-h6cj-26g5-67fv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-h6cj-26g5-67fv","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:21:29.477Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6f5d32accf13ffaf83e83be6ca10ac73"],"technology":"github.com/OpenListTeam/OpenList","known_exclusions":[],"conditions_summary":"### Summary\n\nAlist's offline-download feature (`POST /api/fs/add_offline_download` with `tool: \"SimpleHttp\"`) accepts an attacker-supplied URL, fetches it, and saves the bytes under a per-task temp directory before transferring to the user's destination storage. The temp filename is taken from the response's `Content-Disposition` header (attacker-controlled when the URL points to an attacker HTTP server), passed verbatim to `filepath.Join(tempDir, filename)`, and written via `os.Create` with no containment check. Go's `filepath.Join` calls `Clean` on the result, which collapses `..` segments and lets the attacker traverse out of `tempDir` to write any file the alist process can write.\n\nA non-admin user with `PermAddOfflineDownload` permission on any path is sufficient.\n\n### Affected code\n\n`internal/offline_download/http/util.go` — filename returned verbatim from header:\n\n```go\nfunc parseFilenameFromContentDisposition(contentDisposition string) (string, error) {\n    if contentDisposition == \"\" {\n        return \"\", fmt.Errorf(\"Content-Disposition is empty\")\n    }\n    _, params, err := mime.ParseMediaType(contentDisposition)\n    if err != nil {\n        return \"\", err\n    }\n    filenam","public_affected_ranges":["<= 4.2.2"]}],"null_published_at":"2026-11-04T10:04:27.943Z","source_updated_at":"2026-09-03T17:37:52.000Z","source_disclosed_at":"2026-09-03T17:37:20.000Z","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":"2026-11-02T02:21:29.477Z"}],"next_cursor":null,"snapshot_revision":"42594"}