CVE-2021-3943: Moodle vulnerable to RCE via unsafe deserialization

critical Affects moodle/moodle. Feed 2026.10.29.1, updated 2026-10-28; published 2021-11-23; advisory modified 2024-02-16.

Moodle vulnerable to RCE via unsafe deserialization

Package: moodle/moodle Composer
Affected versions: >=3.11 and <3.11.4 or >=3.10 and <3.10.8 or >=3.9 and <3.9.11
Fixed in: 3.11.4, 3.10.8, 3.9.11
Severity: critical CVSS 9.8
Exploitation: not on CISA KEV · EPSS 2% (83.9th percentile)
Published: 2021-11-23
Source: osv.dev

References

CWE-20

NVD record moodle/moodle advisories

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