CVE-2022-50943
Moodle LMS 4.0 Cross-Site Scripting via course search.php
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.
INFO
Published Date :
May 10, 2026, 1:16 p.m.
Last Modified :
May 27, 2026, 7:56 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Moodle LMS to the latest version.
- Apply vendor-provided security patches.
- Sanitize user input for search parameters.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-50943.
| URL | Resource |
|---|---|
| https://git.in.moodle.com/moodle | Product |
| https://moodle.org/ | Product |
| https://www.exploit-db.com/exploits/51115 | Exploit VDB Entry |
| https://www.vulncheck.com/advisories/moodle-lms-cross-site-scripting-via-course-search-php | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50943 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50943
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-50943 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-50943 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 27, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* versions up to (including) 4.0.0 Added Reference Type VulnCheck: https://git.in.moodle.com/moodle Types: Product Added Reference Type VulnCheck: https://moodle.org/ Types: Product Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/51115 Types: Exploit, VDB Entry Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/moodle-lms-cross-site-scripting-via-course-search-php Types: Third Party Advisory -
New CVE Received by [email protected]
May. 10, 2026
Action Type Old Value New Value 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://git.in.moodle.com/moodle Added Reference https://moodle.org/ Added Reference https://www.exploit-db.com/exploits/51115 Added Reference https://www.vulncheck.com/advisories/moodle-lms-cross-site-scripting-via-course-search-php