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MEDIUM severity

Cross-site Scripting in moodleGHSA-wvh5-78h5-gmgr

MEDIUMFix: moodle/moodle@6abe964

GHSA-wvh5-78h5-gmgr is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in moodle/moodle. A fix is available for moodle/moodle — see the affected versions and patch details below.

Also known asBIT-moodle-2022-30596CVE-2022-30596
Published
Updated
Affected
4 pkgs
Patched
4 / 4
Exploits
None indexed
Exploitation data as of Nov 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs60th percentile — riskier than 60% of all scored CVEsHighest risk
0.33%0.69%1.05%1.41%0.9%0.9%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

4 pkgs affected
🐘moodle/moodle🐘moodle/moodle🐘moodle/moodle🐘moodle/moodle

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

A flaw was found in moodle where ID numbers displayed when bulk allocating markers to assignments required additional sanitizing to prevent a stored XSS risk.

Affected Packages

4 total 4 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmoodle/moodle≥ 4.0&&< 4.0.14.0.1composer require moodle/moodle:^4.0.1
🐘Packagistmoodle/moodle≥ 3.11&&< 3.11.73.11.7composer require moodle/moodle:^3.11.7
🐘Packagistmoodle/moodle≥ 3.10&&< 3.10.113.10.11composer require moodle/moodle:^3.10.11
🐘Packagistmoodle/moodle≥ 3.9&&< 3.9.143.9.14composer require moodle/moodle:^3.9.14

Affected Products

3 products · 8 configurations
OS
fedorafedoraproject
3 versions
343536
Application
moodlemoodle
≥ 3.11 && < 3.11.7
1 version
4.0.0
OS
enterprise linuxredhat
1 version
8.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for moodle/moodle, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update moodle/moodle to 4.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wvh5-78h5-gmgr is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

A flaw was found in moodle where ID numbers displayed when bulk allocating markers to assignments required additional sanitizing to prevent a stored XSS risk.
O3 Security · Impact-Aware SCA

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Cross-site Scripting in moodle (Medium 5.4)