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Moodle CVE-2013-3630

MEDIUM
Code Injection (CWE-94)
2013-11-01 cret@cert.org
4.6
CVSS 2.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Code injection prevention, sandbox exec
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 4.6 (MEDIUM). Attack characteristics: network attack vector, high complexity. Public proof-of-concept exploit code is available. EPSS exploitation probability: 64.52%.

Exploit ScenarioDerived

A remote attacker could inject and execute arbitrary code within the application by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 64.5% exploitation probability (EPSS)

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AnalysisAI

Moodle through 2.5.2 allows remote authenticated administrators to execute arbitrary programs by configuring the aspell pathname and then triggering a spell-check operation within the TinyMCE editor. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable. Public exploit code available and EPSS exploitation probability 64.5%.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Never evaluate user-controlled input as code. Use sandboxing, disable dangerous functions, apply strict input validation.

Affected Packages

composer moodle/moodle fix: 2.5.3

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in composer

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Code Injection (CWE-94), which allows attackers to inject and execute arbitrary code within the application. Moodle through 2.5.2 allows remote authenticated administrators to execute arbitrary programs by configuring the aspell pathname and then triggering a spell-check operation within the TinyMCE editor. Affected products include: Moodle. Version information: through 2.5.2.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.6 MEDIUM
AV:N/AC:H/Au:S/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Confidentiality
P
Integrity
P
Availability
P

DescriptionCVE.org

Moodle through 2.5.2 allows remote authenticated administrators to execute arbitrary programs by configuring the aspell pathname and then triggering a spell-check operation within the TinyMCE editor.

Threat Intelligence Overview

Threat Score
4.4/10
Composite threat intelligence
EPSS Score
64.5%
Top 2% exploitable
Exploit
POC
Public exploit code exists
Data Quality
5 sources
Confidence: Medium

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.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 64.5%
Patch available Yes
Active threat Yes
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
High

Priority Score

123
Low Medium High Critical
KEV: 0
EPSS: +65
CVSS: +23
PoC: +20
Weaponized: +15
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5.0:beta:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.0:*:*:*:*:*:*:*
+ 96 more

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