CVE-2021-36396: Moodle vulnerable to Server-Side Request Forgery

March 6, 2023 (updated March 5, 2025)

In Moodle, insufficient redirect handling made it possible to blindly bypass cURL blocked hosts/allowed ports restrictions, resulting in a blind SSRF risk.

References

github.com/advisories/GHSA-4rmj-w58m-fvch
github.com/moodle/moodle
moodle.org/mod/forum/discuss.php?d=424802
nvd.nist.gov/vuln/detail/CVE-2021-36396

Code Behaviors & Features

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