Moodle vulnerable to Server Side Request ForgeryGHSA-xxp4-mf4h-6cwm
HIGHGHSA-xxp4-mf4h-6cwm is a high-severity (CVSS 7.5) Server-Side Request Forgery (SSRF) vulnerability in moodle/moodle. A fix is available for moodle/moodle — see the affected versions and patch details below.
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-xxp4-mf4h-6cwm.
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/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
An issue in the logic used to check 0.0.0.0 against the cURL blocked hosts lists resulted in an SSRF risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8, 3.11 to 3.11.14, 3.9 to 3.9.21 and earlier unsupported versions.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | moodle/moodle | ≥ 4.2.0&&< 4.2.1 | 4.2.1composer require moodle/moodle:^4.2.1 |
| 🐘Packagist | moodle/moodle | ≥ 4.1.0&&< 4.1.4 | 4.1.4composer require moodle/moodle:^4.1.4 |
| 🐘Packagist | moodle/moodle | ≥ 4.0.0&&< 4.0.9 | 4.0.9composer require moodle/moodle:^4.0.9 |
| 🐘Packagist | moodle/moodle | ≥ 3.10.0&&< 3.11.15 | 3.11.15composer require moodle/moodle:^3.11.15 |
| 🐘Packagist | moodle/moodle | all versions | 3.9.22composer require moodle/moodle:^3.9.22 |
Affected Products
moodlemoodleDetection & 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 4.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xxp4-mf4h-6cwm 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 GHSA-xxp4-mf4h-6cwm in your dependencies?
Find it across Packagist, including transitive dependencies.