{"id":"CVE-2026-25057","aliases":["EUVD-2026-6838","GHSA-mccg-p332-252h"],"status":"published","title":"Zip Slip in MarkUs config upload allowing RCE","description":"MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able to upload a zip file to create an assignment from an exported configuration (courses/\u003c:course_id\u003e/assignments/upload_config_files). The uploaded zip file entry names are used to create paths to write files to disk without checking these paths. This vulnerability is fixed in 2.9.1.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00546,"percentile":0.4622,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-23"],"published":"2026-02-09T19:16:55Z","modified":"2026-10-28T02:31:02Z","exploits":[{"source":"pocgithub","id":"ustr/CVE-2026-25057","title":"ustr/CVE-2026-25057","date":"2026-09-04","url":"https://github.com/ustr/CVE-2026-25057"}],"products":[{"vendor":"markusproject","product":"markus"}],"references":[{"url":"https://github.com/MarkUsProject/Markus/security/advisories/GHSA-mccg-p332-252h","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/MarkUsProject/Markus/commit/0ca002a1f0071c7a00dbb2ed34fede57323c5dc7","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1","tags":["x_refsource_MISC","Product","Release Notes","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25057.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25057","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-25057","title":"Zip Slip in MarkUs config upload allowing RCE","description":"MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able to upload a zip file to create an assignment from an exported configuration (courses/\u003c:course_id\u003e/assignments/upload_config_files). The uploaded zip file entry names are used to create paths to write files to disk without checking these paths. This vulnerability is fixed in 2.9.1.","status":"published","published":"2026-02-09T19:16:55.98Z","modified":"2026-02-10T16:00:52.427Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-23"],"updated_at":"2026-11-02T13:41:30.911526Z"}],"euvd":[{"id":"EUVD-2026-6838","description":"MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able to upload a zip file to create an assignment from an exported configuration (courses/\u003c:course_id\u003e/assignments/upload_config_files). The uploaded zip file entry names are used to create paths to write files to disk without checking these paths. This vulnerability is fixed in 2.9.1.","status":"published","published":"2026-02-09T19:16:55Z","modified":"2026-02-10T16:00:52Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:48:42.087959Z"}],"nvd":[{"id":"CVE-2026-25057","description":"MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able to upload a zip file to create an assignment from an exported configuration (courses/\u003c:course_id\u003e/assignments/upload_config_files). The uploaded zip file entry names are used to create paths to write files to disk without checking these paths. This vulnerability is fixed in 2.9.1.","status":"published","published":"2026-02-09T20:15:56.55Z","modified":"2026-06-17T10:24:03.453Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-23"],"updated_at":"2026-11-02T14:12:05.52517Z"}],"osv":[{"id":"CVE-2026-25057","title":"Zip Slip in MarkUs config upload allowing RCE","description":"MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able to upload a zip file to create an assignment from an exported configuration (courses/\u003c:course_id\u003e/assignments/upload_config_files). The uploaded zip file entry names are used to create paths to write files to disk without checking these paths. This vulnerability is fixed in 2.9.1.","status":"published","published":"2026-02-09T19:16:55.98Z","modified":"2026-10-28T02:31:02.818592948Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-23"],"updated_at":"2026-11-02T15:44:59.438965Z"}]}}