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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Moodle Moodle LMS affected
Version Status Constraints
4.0 affected —

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Sun, 10 May 2026 12:45:00 +0000

Type Values Removed Values Added
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.
Title Moodle LMS 4.0 Cross-Site Scripting via course search.php
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-10T12:12:44.418Z

Reserved: 2026-01-11T13:34:26.330Z

Link: CVE-2022-50943

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-10T13:16:31.997

Modified: 2026-05-10T13:16:31.997

Link: CVE-2022-50943

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-10T13:30:12Z

Weaknesses