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MEDIUM severity

CVE-2015-3275 — moodle

MEDIUMFix: moodle/moodle@46460a2

CVE-2015-3275 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in moodle/moodle. A fix is available for moodle/moodle — see the affected versions and patch details below.

Moodle multiple cross-site scripting (XSS) vulnerabilities

Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Oct 19, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs73th percentile — riskier than 73% of all scored CVEsHighest risk
0.00%0.66%1.31%1.97%0.3%1.5%Apr 26Aug 26Oct 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

3 pkgs affected
🐘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

Multiple cross-site scripting (XSS) vulnerabilities in the SCORM module in Moodle through 2.6.11, 2.7.x before 2.7.9, 2.8.x before 2.8.7, and 2.9.x before 2.9.1 allow remote attackers to inject arbitrary web script or HTML via a crafted organization name to (1) mod/scorm/player.php or (2) mod/scorm/prereqs.php.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmoodle/moodle≥ 2.7.0&&< 2.7.92.7.9composer require moodle/moodle:^2.7.9
🐘Packagistmoodle/moodle≥ 2.8.0&&< 2.8.72.8.7composer require moodle/moodle:^2.8.7
🐘Packagistmoodle/moodle≥ 2.9.0&&< 2.9.12.9.1composer require moodle/moodle:^2.9.1

Affected Products

1 product · 21 configurations
Application
moodlemoodle
≤ 2.6.11
20 versions
2.7.02.7.12.7.22.7.32.7.42.7.52.7.62.7.72.7.82.7.92.8.02.8.1

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 2.7.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2015-3275 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

Multiple cross-site scripting (XSS) vulnerabilities in the SCORM module in Moodle through 2.6.11, 2.7.x before 2.7.9, 2.8.x before 2.8.7, and 2.9.x before 2.9.1 allow remote attackers to inject arbitrary web script or HTML via a crafted organization name to (1) mod/scorm/player.php or (2) mod/scorm/prereqs.php.
O3 Security · Impact-Aware SCA

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CVE-2015-3275: moodle XSS — Fixed in 2.7.9