HOMEVULNERABILITIESCVE-2026-25962
MEDIUM

CVE-2026-25962

CWE-409Published: March 6, 2026· Updated: Mar 12, 2026

6.5
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:11.7th

Official Description

MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.4, MarkUs currently extracts zip files without any size or entry-count limits. For example, instructors can upload a zip file to provide an assignment configuration; students can upload a zip file for an assignment submission and indicate its contents should be extracted. This issue has been patched in version 2.9.4.

NVD Source

Technical Analysis

CVE-2026-25962 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

markusproject1 product
markus
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/MarkUsProject/Markus/security/advisories/GHSA-x8xv-j7fc-65x5

All References (2)

→
https://github.com/MarkUsProject/Markus/releases/tag/v2.9.4Product · Release Notes
→
https://github.com/MarkUsProject/Markus/security/advisories/GHSA-x8xv-j7fc-65x5Vendor Advisory

Quick Facts

CVE IDCVE-2026-25962
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-409
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMar 6, 2026

Related CVEs (CWE-409)

CVE-2026-53430
8.7
CVE-2026-44697
8.6
CVE-2026-48594
8.2
CVE-2026-49755
8.2
CVE-2026-43970
8.2
CVE-2026-48510
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-25962 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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