Moodle
CVE-2026-26046
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAdmin accesses TeX filter settings
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ExploitInject malicious shell metacharacters in config value
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ExecutionMoodle passes unsanitized input to ImageMagick
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ImpactExecute arbitrary system commands
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK
2 techniques across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Moodle TeX filter must be enabled, ImageMagick must be installed on the server, and attacker must possess administrator account credentials to access filter configuration settings. |
| Impact | CVSS 7.2 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: None. Exploitation requires authentication. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to command injection. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Moodle's TeX filter fails to properly sanitize administrative configuration inputs, enabling command injection on systems with ImageMagick installed. An authenticated administrator can inject arbitrary system commands through a malicious TeX filter setting, achieving code execution with the privileges of the Moodle server process. No patch is currently available, and exploitation requires administrative access but could compromise the entire Moodle installation.
Earlier versions of this analysis (1)
A vulnerability was found in a Moodle TeX filter administrative setting where insufficient sanitization of configuration input could allow command injection. [CVSS 7.2 HIGH]
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-78 (OS Command Injection). Affects Moodle. A vulnerability was found in a Moodle TeX filter administrative setting where insufficient sanitization of configuration input could allow command injection. On sites where the TeX filter is enabled and ImageMagick is installed, a maliciously crafted setting value entered by an administrator could result in unintended system command execution. While exploitation requires administrative privileges, successful compromise could affect the entire Moodle server.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
A vulnerability was found in a Moodle TeX filter administrative setting where insufficient sanitization of configuration input could allow command injection. On sites where the TeX filter is enabled and ImageMagick is installed, a maliciously crafted setting value entered by an administrator could result in unintended system command execution. While exploitation requires administrative privileges, successful compromise could affect the entire Moodle server.
Executive ViewAI
A command injection vulnerability in Moodle's TeX filter administrative settings could allow authenticated administrators to execute arbitrary commands on servers running affected instances. Organizations using Moodle for learning management face potential system compromise and data breach risks until remediation is implemented.
Disable TeX filter functionality if not required for course content; restrict administrative console access via network segmentation or IP allowlisting to trusted administrator networks only; implement Web Application Firewall rules to detect and block command injection patterns in filter configuration parameters; enforce principle of least privilege for administrative accounts; enable enhanced logging and monitoring of administrative configuration changes; conduct immediate audit of current TeX filter settings for suspicious modifications.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
Affected Products (CPE)CVE.org
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A flaw was found in Moodle. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authenticatio
In Moodle 2.x and 3.x, SQL injection can occur via user preferences. Rated critical severity (CVSS 9.8), this vulnerabil
The Moodle LMS Jmol plugin version 6.1 and earlier contains a path traversal vulnerability in jsmol.php. The query param
Multiple cross-site scripting (XSS) vulnerabilities in Moodle through 2.2.11, 2.3.x before 2.3.9, 2.4.x before 2.4.6, an
Unrestricted file upload vulnerability in the double extension support in the "image" module in Moodle 3.1.2 allows remo
Unrestricted file upload vulnerability in the "legacy course files" and "file manager" modules in Moodle 3.1.2 allows re
moodle before versions 3.5.2, 3.4.5, 3.3.8, 3.1.14 is vulnerable to an XML import of ddwtos could lead to intentional re
An issue was discovered in Moodle 3.x. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low a
Moodle 3.1.2 allows remote attackers to obtain sensitive information via unspecified vectors, related to a "SQL Injectio
Moodle 3.10.3 contains a persistent cross-site scripting vulnerability in the calendar event subtitle field that allows
GitHub PoC
Exploit-DB