Unrated severityNVD Advisory· Published Feb 9, 2026· Updated Feb 10, 2026
Zip Slip in MarkUs config upload allowing RCE
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/<:course_id>/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.
Affected products
2- MarkUsProject/Markusv5Range: < 2.9.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- github.com/MarkUsProject/Markus/commit/0ca002a1f0071c7a00dbb2ed34fede57323c5dc7mitrex_refsource_MISC
- github.com/MarkUsProject/Markus/releases/tag/v2.9.1mitrex_refsource_MISC
- github.com/MarkUsProject/Markus/security/advisories/GHSA-mccg-p332-252hmitrex_refsource_CONFIRM
News mentions
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