What’s Vulnerable › Vulnerabilities

CVE-2021-36399

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-06 · updated 2026-06-17
• Weakness: CWE-79

Description

In Moodle, ID numbers displayed in the quiz override screens required additional sanitizing to prevent a stored XSS risk.

Affected products

• Moodle: 3.11.0

References

• https://moodle.org/mod/forum/discuss.php?d=424805
• https://moodle.org/mod/forum/discuss.php?d=424805

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