CVE-2019-14882Network attack vector

Phishing redirects via unrestricted returnto URL

Published Mar 18, 2020 · Updated Aug 5, 2024

Open redirect in Moodle LMS before 3.7.3, 3.6.7, and 3.5.9 allows remote attackers to redirect users via crafted Lesson edit links. The Lesson edit handler accepts the returnto parameter as PARAM_URL and carries that unrestricted value through the form instead of requiring a local URL. A user with Lesson editing access must open the crafted link; the resulting navigation reaches an attacker-chosen site but does not directly expose or modify Moodle data.

CVSS severity6.1
Medium
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Moodle LMS before 3.7.3, 3.6.7, and 3.5.9 allows remote attackers to redirect users via crafted Lesson edit links. The Lesson edit handler accepts the returnto parameter as PARAM_URL and carries that unrestricted value through the form instead of requiring a local URL. A user with Lesson editing access must open the crafted link; the resulting navigation reaches an attacker-chosen site but does not directly expose or modify Moodle data.

The record

CVE
CVE-2019-14882
Published
Mar 18, 2020
Updated
Aug 5, 2024
Vendor
Moodle
Product
Moodle LMS
Classifications
CWE-601, T1566.002
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

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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=3.5.9
  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

3.1Red Hat, Inc.CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N
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-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Spearphishing Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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