What’s Vulnerable › Vulnerabilities

CVE-2022-40313

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-30 · updated 2026-06-17
• Weakness: CWE-79

Description

Recursive rendering of Mustache template helpers containing user input could, in some cases, result in an XSS risk or a page failing to load.

Affected products

• Fedoraproject Extra Packages For Enterprise Linux: 8.0
• Fedoraproject Fedora: 35, 36
• Moodle: from 3.9.0 before 3.9.17; from 3.11.0 before 3.11.10; from 4.0.0 before 4.0.4 — fixed in 3.11.10, 3.9.17, 4.0.4

How to fix

Upgrade to a fixed version: Moodle 3.11.10, 3.9.17, 4.0.4. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2128146
• https://moodle.org/mod/forum/discuss.php?d=438392
• https://bugzilla.redhat.com/show_bug.cgi?id=2128146
• https://moodle.org/mod/forum/discuss.php?d=438392

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