CVE-2024-29374Public exploitNetwork attack vector

Browser script execution via crafted lang parameter

Published Mar 21, 2024 · Updated Aug 15, 2024

Reflected XSS in Moodle LMS 3.10.9 allows remote attackers to execute script in a user's browser through a crafted lang URL parameter. The request handler returns attacker-controlled lang input without neutralizing it for the resulting browser context. Exploitation requires a user to open the crafted URL, exposing that user's Moodle browser context to script-controlled reads and actions.

CVSS severity6.1
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Moodle LMS 3.10.9 allows remote attackers to execute script in a user's browser through a crafted lang URL parameter. The request handler returns attacker-controlled lang input without neutralizing it for the resulting browser context. Exploitation requires a user to open the crafted URL, exposing that user's Moodle browser context to script-controlled reads and actions.

The record

CVE
CVE-2024-29374
Published
Mar 21, 2024
Updated
Aug 15, 2024
Vendor
Moodle
Product
Moodle LMS
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.10.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Moodle · Moodle LMSversion=3.10.9

Published CVSS scores

6.1CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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