CVE-2026-25057 is a critical path traversal vulnerability affecting MarkUs, a web application for student assignment submission and grading, in versions prior to 2.9.1. The flaw allows authenticated instructors to upload a malicious zip file containing specially crafted entry names, leading to arbitrary file write on the server. With a CVSS score of 9.1 (CRITICAL), this vulnerability has a network attack vector, low attack complexity, and can result in complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.9.1CPE matchmatch criteria | cpe:2.3:a:markusproject:markus:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.7 Bluesky, 0.4 Mastodon, and 1.7 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.