CVE-2022-50943

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.

Overview

State

—

Assigner (CNA)

—

CVSS severity

medium

CVSS score

6.1 / 10

CVSS vector

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

Effective score

6.1 / 10 MEDIUM source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2022-50943

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-05-10 13:16:31 UTC

NVD last modified

2026-05-13 15:27:30 UTC

NVD CVSS v3.1

6.1 / 10 MEDIUM source: disclosure@vulncheck.com

NVD CVSS vector

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

Exploitability subscore

2.8 / 10

Impact subscore

2.7 / 10

EPSS score

0.0011 (probability of exploitation in next 30 days)

EPSS percentile

28.80% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD-assigned CWE(s): CWE-79 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2022-55968

Assigner

VulnCheck

Published

May 10, 2026, 12:12:44 PM

Updated

May 24, 2026, 1:37:22 AM

EUVD base score (CVSS 4.0)

5.1 / 10
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

EUVD-reported EPSS

0.1200

Vendors

Moodle

Products

Moodle LMS (4.0)

ENISA 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.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (7)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://git.in.moodle.com/moodle tenable:git.in.moodle.com
• https://moodle.org/ tenable:moodle.org
• https://nvd.nist.gov/vuln/detail/CVE-2022-50943 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2022-50943 tenable:www.cve.org
• https://www.exploit-db.com/exploits/51115 tenable:www.exploit-db.com
• https://www.first.org/epss/ tenable:www.first.org
• https://www.vulncheck.com/advisories/moodle-lms-cross-site-scripting-via-course-search-php tenable:www.vulncheck.com

• Microsoft Releases Out-of-Band Patch to Fix Critical RRAS RCE ...
  web:cybersecuritynews.com

  Microsoft released an out-of-band hotpatch update on March 13, 2026, addressing serious security vulnerabilities in Windows 11 versions 24H2 and 25H2.

  2026-05-26 03:07 UTC
• NVD - Home
  web:nvd.nist.gov

  The NVD is the U.S. government repository of standards based vulnerability management data represented using the Security Content Automation Protocol (SCAP). This data enables automation of vulnerability management, security measurement, and compliance. The NVD includes databases of security checklist references, security-related software flaws, product names, and impact metrics. For ...

  2026-05-26 03:07 UTC
• Security Update Guide - Microsoft
  web:portal.msrc.microsoft.com

  The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

  2026-05-26 03:07 UTC
• Windows 11 KB5079473 & KB5078883 cumulative updates released
  web:www.bleepingcomputer.com

  Microsoft has released Windows 11 KB5079473 and KB5078883 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features.

  2026-05-26 03:07 UTC
• CVE: Common Vulnerabilities and Exposures
  web:www.cve.org

  At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures

  2026-05-26 03:07 UTC
• Windows 11 KB5079473 Patch Tuesday improves File Explorer and more
  web:www.neowin.net

  Windows 11's March 2026 Patch Tuesday update is here under KB5079473 with File Explorer improvements and more.

  2026-05-26 03:07 UTC
• Microsoft March 2026 Patch Tuesday fixes 2 zero-days, Windows 11 ...
  web:www.notebookcheck.net

  Microsoft's March 2026 Patch Tuesday fixes 79 flaws, including two publicly disclosed zero-days. Windows 11 gets KB5079473 and KB5078883, while Windows 10 receives KB5078885.

  2026-05-26 03:07 UTC
• Windows 11 KB5079473 is here with some actually GOOD upgrades — here's ...
  web:www.windowscentral.com

  Microsoft's March Patch Tuesday updates are rolling out on Windows 11, and this month there's some actually good improvements coming to enhance your PC.

  2026-05-26 03:07 UTC
• I tested Windows 11 March 2026 Updates: Everything new ... - Windows Latest
  web:www.windowslatest.com

  Windows 11 March 2026 Patch Tuesday update adds Emoji 16.0, Sysmon, network speed test, reliability improvements, and security fixes.

  2026-05-26 03:07 UTC
• Install Microsoft's emergency Windows patch now - ZDNET
  web:www.zdnet.com

  Install Microsoft's emergency Windows patch now - what it fixes and why it was rushed out Microsoft issued an out-of-band fix after its latest update introduced a nasty surprise.

  2026-05-26 03:07 UTC

Only Available for Registered Users. Sign in to view.