CVE-2026-26047
Moodle: moodle: uncontrolled resource consumption in tex formula editor leading to denial of service
6.5CVSSMEDIUM
Description
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.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
Attack Graph
Products CVE Techniques Tactics
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Exploitability
Official Patch Available
MITRE ATT&CK
1 technique Impact
References
https://access.redhat.com/security/cve/CVE-2026-26047
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2440905
bugzilla.redhat.com
https://github.com/moodle/moodle
github.com
and 9 more references View all →
Timeline
Published
Feb 21, 2026
Last Updated
Feb 26, 2026
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