CVE-2026-102581

Severity CVSS v4.0:

Pending analysis

Type:

CWE-79 Cross-Site Scripting (XSS)

Publication date:

30/09/2026

Last modified:

01/10/2026

Description

A flaw was found in Moodle. Insufficient output escaping in templates used to display forum posts enables a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious content into a forum post, which then executes arbitrary script code in the browser of another user viewing the affected post.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.60 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x

4.60

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:moodle:moodle::::::::		4.5.13 (excluding)
cpe:2.3:a:moodle:moodle::::::::	5.0.0 (including)	5.0.9 (excluding)
cpe:2.3:a:moodle:moodle::::::::	5.1.0 (including)	5.1.6 (excluding)
cpe:2.3:a:moodle:moodle::::::::	5.2.0 (including)	5.2.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-102581

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools