CVE-2026-26047
Published:February 21, 2026
Updated:April 26, 2026
A denial-of-service vulnerability was identified in Moodle’s TeX formula editor. When rendering TeX content using mimetex, insufficient execution time limits could allow specially crafted formulas to consume excessive server resources. An authenticated user could abuse this behavior to degrade performance or cause service interruption.
Affected Packages
moodle/moodle (PHP):
Affected version(s) >=v5.0.0 <v5.0.5Fix Suggestion:
Update to version v5.0.5moodle/moodle (PHP):
Affected version(s) >=v5.1.0 <v5.1.2Fix Suggestion:
Update to version v5.1.2moodle/moodle (PHP):
Affected version(s) >=v1.0.0 <v4.5.9Fix Suggestion:
Update to version v4.5.9Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.08
