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Description

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.

PUBLISHED Reserved 2026-01-11 | Published 2026-05-10 | Updated 2026-05-10 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

4.0
affected

Credits

Saud Alenazi finder

References

www.exploit-db.com/exploits/51115 (ExploitDB-51115) exploit

moodle.org/ (Official Product Homepage) product

git.in.moodle.com/moodle (Product Reference) product

www.vulncheck.com/...ss-site-scripting-via-course-search-php (VulnCheck Advisory: Moodle LMS 4.0 Cross-Site Scripting via course search.php) third-party-advisory

cve.org (CVE-2022-50943)

nvd.nist.gov (CVE-2022-50943)

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