Moodle
CVE-2022-40313
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Lifecycle Timeline
1DescriptionNVD
Recursive rendering of Mustache template helpers containing user input could, in some cases, result in an XSS risk or a page failing to load.
AnalysisAI
Recursive rendering of Mustache template helpers containing user input could, in some cases, result in an XSS risk or a page failing to load. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Technical ContextAI
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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 include: Moodle, Fedoraproject Extra Packages For Enterprise Linux, Fedoraproject Fedora.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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