CVE-2026-27807

Published: Mar 06, 2026 Last Modified: Mar 12, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 4,9
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: high
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.4, MarkUs allows course instructors to upload YAML files to create/update various entities (e.g., assignment settings). These YAML files are parsed with aliases enabled. This issue has been patched in version 2.9.4.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0004
Percentile
0,1th
Updated

EPSS Score Trend (Last 10 Days)

776

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Other)
Applicable Platforms
Languages: Not Language-Specific, XML
Likelihood of Exploit: Medium
View CWE Details
Application

Markus by Markusproject

Product Information
Vendor Markusproject
Product Markus
Version Range Affected
To 2.9.4 (exclusive)
cpe:2.3:a:markusproject:markus:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/MarkUsProject/Markus/releases/tag/v2.9.4
https://github.com/MarkUsProject/Markus/releases/tag/v2.9.4
https://github.com/MarkUsProject/Markus/security/advisories…
https://github.com/MarkUsProject/Markus/security/advisories/GHSA-m9rx-85mx-q9h6