CVE-2026-26047

Moodle: moodle: uncontrolled resource consumption in tex formula editor leading to denial of service

Published: Feb 21, 2026Updated: Feb 26, 2026 Sources: CVE List NVD GHSA BDUCWE-400

6.5MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-400 CWE-770

Affected Products

ООО «Ред Софт»

commercial·RUaka red soft

РЕД ОСOn-premOS

Operating Systems / linux-distro

Мартин Догиамас

individual-dev·AUaka martin dogiamas

MoodleOn-premWeb App

Web & CMS Plugins

moodle

oss-project·AUaka lms, jmol plugin

moodleOn-premWeb App

Web & CMS Plugins / cms-core

Packagist

package-ecosystem

moodle/moodleWeb App

Web & CMS Plugins / cms-core

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://github.com/moodle/moodle

github.com

https://access.redhat.com/security/cve/CVE-2026-26047

access.redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2440905

bugzilla.redhat.com

and 9 more references View all →

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