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 is leading an attacker to steal admin and all user account cookies by storing the malicious XSS payload in Header and Footer. NOTE: this is disputed by the vendor because the "Additional HTML Section" for "Header and Footer" can only be supplied by an administrator, who is intentionally allowed to enter unsanitized input (e.g., site-specific JavaScript).
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-05-16T00:00:00

Updated: 2024-08-03T20:40:47.335Z

Reserved: 2021-02-10T00:00:00

Link: CVE-2021-27131

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-05-16T20:15:08.987

Modified: 2024-08-03T21:15:33.450

Link: CVE-2021-27131

cve-icon Redhat

No data.