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CVE

CVE-2026-25057

Zip Slip in MarkUs config upload allowing RCE
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CVE

CVE-2026-25057

Zip Slip in MarkUs config upload allowing RCE

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/<:courseid>/assignments/uploadconfig_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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25057.json, https://github.com/MarkUsProject/Markus/commit/0ca002a1f0071c7a00dbb2ed34fede57323c5dc7, https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1, https://github.com/MarkUsProject/Markus/security/advisories/GHSA-mccg-p332-252h, https://nvd.nist.gov/vuln/detail/CVE-2026-25057

Severity

9.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.1
EPSS Probability
0.00097%
EPSS Percentile
0.27021%
Introduced Version
0
Fix Available
55d74f2ddb72d2ec2f29aa2b4cb6b2da10755036

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