{"id":"CVE-2022-41956","aliases":["EUVD-2022-45063","GHSA-g7x7-mgrv-f24x"],"status":"published","title":"Autolab is vulnerable to file disclosure via remote handin feature","description":"Autolab is a course management service, initially developed by a team of students at Carnegie Mellon University, that enables instructors to offer autograded programming assignments to their students over the Web. A file disclosure vulnerability was discovered in Autolab's remote handin feature, whereby users are able to hand-in assignments using paths outside their submission directory. Users can then view the submission to view the file's contents. The vulnerability has been patched in version 2.10.0. As a workaround, ensure that the field for the remote handin feature is empty (Edit Assessment \u003e Advanced \u003e Remote handin path), and that you are not running Autolab as `root` (or any user that has write access to `/`). Alternatively, disable the remote handin feature if it is unneeded by replacing the body of `local_submit` in `app/controllers/assessment/handin.rb` with `render(plain: \"Feature disabled\", status: :bad_request) \u0026\u0026 return`.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01849,"percentile":0.79277,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2023-01-14T00:40:32Z","modified":"2026-10-28T02:30:54Z","products":[{"vendor":"autolab","product":"autolab"},{"vendor":"autolabproject","product":"autolab"}],"references":[{"url":"https://github.com/autolab/Autolab/security/advisories/GHSA-g7x7-mgrv-f24x","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://securitylab.github.com/advisories/GHSL-2022-100_Autolab/","tags":["x_refsource_MISC","x_transferred","advisory"]},{"url":"https://www.stackhawk.com/blog/rails-path-traversal-guide-examples-and-prevention/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","article"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/41xxx/CVE-2022-41956.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-41956","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2022-41956","title":"Autolab is vulnerable to file disclosure via remote handin feature","description":"Autolab is a course management service, initially developed by a team of students at Carnegie Mellon University, that enables instructors to offer autograded programming assignments to their students over the Web. A file disclosure vulnerability was discovered in Autolab's remote handin feature, whereby users are able to hand-in assignments using paths outside their submission directory. Users can then view the submission to view the file's contents. The vulnerability has been patched in version 2.10.0. As a workaround, ensure that the field for the remote handin feature is empty (Edit Assessment \u003e Advanced \u003e Remote handin path), and that you are not running Autolab as `root` (or any user that has write access to `/`). Alternatively, disable the remote handin feature if it is unneeded by replacing the body of `local_submit` in `app/controllers/assessment/handin.rb` with `render(plain: \"Feature disabled\", status: :bad_request) \u0026\u0026 return`.","status":"published","published":"2023-01-14T00:40:32.121Z","modified":"2024-08-03T12:56:38.655Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:34:28.038197Z"}],"euvd":[{"id":"EUVD-2022-45063","description":"Autolab is a course management service, initially developed by a team of students at Carnegie Mellon University, that enables instructors to offer autograded programming assignments to their students over the Web. A file disclosure vulnerability was discovered in Autolab's remote handin feature, whereby users are able to hand-in assignments using paths outside their submission directory. Users can then view the submission to view the file's contents. The vulnerability has been patched in version 2.10.0. As a workaround, ensure that the field for the remote handin feature is empty (Edit Assessment \u003e Advanced \u003e Remote handin path), and that you are not running Autolab as `root` (or any user that has write access to `/`). Alternatively, disable the remote handin feature if it is unneeded by replacing the body of `local_submit` in `app/controllers/assessment/handin.rb` with `render(plain: \"Feature disabled\", status: :bad_request) \u0026\u0026 return`.","status":"published","published":"2023-01-14T00:40:32Z","modified":"2024-08-03T12:56:38Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:25:19.588915Z"}],"nvd":[{"id":"CVE-2022-41956","description":"Autolab is a course management service, initially developed by a team of students at Carnegie Mellon University, that enables instructors to offer autograded programming assignments to their students over the Web. A file disclosure vulnerability was discovered in Autolab's remote handin feature, whereby users are able to hand-in assignments using paths outside their submission directory. Users can then view the submission to view the file's contents. The vulnerability has been patched in version 2.10.0. As a workaround, ensure that the field for the remote handin feature is empty (Edit Assessment \u003e Advanced \u003e Remote handin path), and that you are not running Autolab as `root` (or any user that has write access to `/`). Alternatively, disable the remote handin feature if it is unneeded by replacing the body of `local_submit` in `app/controllers/assessment/handin.rb` with `render(plain: \"Feature disabled\", status: :bad_request) \u0026\u0026 return`.","status":"published","published":"2023-01-14T01:15:13.23Z","modified":"2026-06-17T05:04:08.043Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:07:35.157734Z"}],"osv":[{"id":"CVE-2022-41956","title":"Autolab is vulnerable to file disclosure via remote handin feature","description":"Autolab is a course management service, initially developed by a team of students at Carnegie Mellon University, that enables instructors to offer autograded programming assignments to their students over the Web. A file disclosure vulnerability was discovered in Autolab's remote handin feature, whereby users are able to hand-in assignments using paths outside their submission directory. Users can then view the submission to view the file's contents. The vulnerability has been patched in version 2.10.0. As a workaround, ensure that the field for the remote handin feature is empty (Edit Assessment \u003e Advanced \u003e Remote handin path), and that you are not running Autolab as `root` (or any user that has write access to `/`). Alternatively, disable the remote handin feature if it is unneeded by replacing the body of `local_submit` in `app/controllers/assessment/handin.rb` with `render(plain: \"Feature disabled\", status: :bad_request) \u0026\u0026 return`.","status":"published","published":"2023-01-14T00:40:32.121Z","modified":"2026-10-28T02:30:54.467376927Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:44:27.186787Z"}]}}