CVE-2022-50943

MEDIUM 6.1

Moodle LMS 4.0 Cross-Site Scripting via course search.php

CVSS Score

6.1

EPSS Score

0.1%

EPSS Percentile

27th

Moodle LMS 4.0 contains a cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting payloads through the search parameter. Attackers can inject JavaScript code via the search field in course/search.php to execute arbitrary scripts in users' browsers and steal session cookies.

CWE	CWE-79
Vendor	moodle
Product	moodle lms
Published	May 10, 2026
Last Updated	May 11, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

None

Availability

None

Affected Versions

Moodle / Moodle LMS

4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/51115 moodle.org: https://moodle.org/ git.in.moodle.com: https://git.in.moodle.com/moodle vulncheck.com: https://www.vulncheck.com/advisories/moodle-lms-cross-site-scripting-via-course-search-php

Credits

Saud Alenazi