What’s Vulnerable › Vulnerabilities

CVE-2021-40693

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-29 · updated 2026-06-17
• Weakness: CWE-287

Description

An authentication bypass risk was identified in the external database authentication functionality, due to a type juggling vulnerability.

Affected products

• Moodle: before 3.9.10; from 3.10.0 before 3.10.7; from 3.11.0 before 3.11.3 — fixed in 3.10.7, 3.11.3, 3.9.10

How to fix

Upgrade to a fixed version: Moodle 3.10.7, 3.11.3, 3.9.10. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2043417
• https://bugzilla.redhat.com/show_bug.cgi?id=2043417

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