How severe is CVE-2021-27131?

This vulnerability has a severity rating of MEDIUM with a CVSS score of 5.4 out of 10.

What type of vulnerability is CVE-2021-27131?

This is classified as CWE-79, which is a common weakness in software security.

CVE-2021-27131 - MEDIUM Severity | CVSS 5.4

Vulnerability Description

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).

Related Vulnerabilities

CVE-2006-10001

MEDIUM

CVSS:5.4(Medium)

A vulnerability, which was classified as problematic, was found in Subscribe to Comments Plugin up to 2.0.7 on WordPress. This affects an unknown part of the file subscribe-to-comments.php. The manipu...

CWE-792006

CVE-2007-1679

MEDIUM

CVSS:5.4(Medium)

Multiple cross-site scripting (XSS) vulnerabilities in Horde Groupware Webmail 1.0 allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors in (1) imp/search.php...

CWE-792007

CVE-2010-10008

MEDIUM

CVSS:5.4(Medium)

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in simplesamlphp simplesamlphp-module-openidprovider up to 0.8.x. It has been declared as problematic. Affected by this vulnerability is an un...

CWE-792010

CVE-2010-3659

MEDIUM

CVSS:5.4(Medium)

Multiple cross-site scripting (XSS) vulnerabilities in TYPO3 CMS 4.1.x before 4.1.14, 4.2.x before 4.2.13, 4.3.x before 4.3.4, and 4.4.x before 4.4.1 allow remote authenticated backend users to inject...

CWE-792010

CVE-2010-3660

MEDIUM

CVSS:5.4(Medium)

TYPO3 before 4.1.14, 4.2.x before 4.2.13, 4.3.x before 4.3.4 and 4.4.x before 4.4.1 allows XSS on the backend.

CWE-792010

CVE-2010-3665

MEDIUM

CVSS:5.4(Medium)

TYPO3 before 4.1.14, 4.2.x before 4.2.13, 4.3.x before 4.3.4 and 4.4.x before 4.4.1 allows XSS on the Extension Manager.

CWE-792010