CVE-2019-14884Network attack vector

Reflected XSS via unsanitized fatal error messages

Published Mar 18, 2020 · Updated Aug 5, 2024

Reflected XSS in Moodle LMS 3.5.8 and earlier, 3.6.6 and earlier, and 3.7.2 and earlier allows remote attackers to run script. Fatal error-message rendering on some pages fails to sanitize attacker-controlled text before inserting it into HTML responses. A victim must open a crafted request; the script executes in the Moodle origin and can read or alter data available to that browser session.

CVSS severity6.1
Medium
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in Moodle LMS 3.5.8 and earlier, 3.6.6 and earlier, and 3.7.2 and earlier allows remote attackers to run script. Fatal error-message rendering on some pages fails to sanitize attacker-controlled text before inserting it into HTML responses. A victim must open a crafted request; the script executes in the Moodle origin and can read or alter data available to that browser session.

The record

CVE
CVE-2019-14884
Published
Mar 18, 2020
Updated
Aug 5, 2024
Vendor
Moodle
Product
Moodle LMS
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.5.9
  2. Affected versionversion=3.6.7
  3. Affected versionversion=3.7.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Moodle · Moodle LMSversion=3.5.9; version=3.6.7; version=3.7.3

Published CVSS scores

6.1NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo