CVE-2018-1042 is a medium-severity (CVSS 6.5) Server-Side Request Forgery (SSRF) vulnerability in moodle/moodle. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for moodle/moodle — see the affected versions and patch details below.
Moodle SSRF Vulnerability
EPSS Exploitation Probability
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
moodle/moodle🐘moodle/moodle🐘moodle/moodle🐘moodle/moodleReal-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
Moodle 3.x has Server Side Request Forgery in the filepicker.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | moodle/moodle | ≥ 3.4&&< 3.4.1 | 3.4.1composer require moodle/moodle:^3.4.1 |
| 🐘Packagist | moodle/moodle | ≥ 3.3&&< 3.3.4 | 3.3.4composer require moodle/moodle:^3.3.4 |
| 🐘Packagist | moodle/moodle | ≥ 3.2&&< 3.2.7 | 3.2.7composer require moodle/moodle:^3.2.7 |
| 🐘Packagist | moodle/moodle | ≥ 3.1&&< 3.1.10 | 3.1.10composer require moodle/moodle:^3.1.10 |
Affected Products
moodlemoodleResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Moodle Filepicker 3.5.2 - Server Side Request Forgery
by Fabian Mosch_ Nick Theisinger · Jul 26, 2019
Detection & mitigation playbook
Open-source dependencyDetect
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.
Fix
Update moodle/moodle to 3.4.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1042 is resolved across your whole dependency graph.
Workarounds
Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.
Frequently Asked Questions
Is CVE-2018-1042 in your dependencies?
Find it across Packagist, including transitive dependencies.