medium5.4
CVE-2021-27131
Moodle vulnerable to stored Cross-site Scripting
Impact
Moodle 3.10.1 is vulnerable to persistent/stored cross-site scripting (XSS) due to the improper input sanitization on the "Additional HTML Section" via "Header and Footer" parameter in `/admin/settings.php`. This vulnerability may lead an attacker to steal admin and all user account cookies by storing the malicious XSS payload in Header and Footer.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | moodle/moodle | <= 3.10.1 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Moodle | Moodle | Version 3.10.1 |