CVE-2026-102577

Severity CVSS v4.0:

Pending analysis

Type:

CWE-918 Server-Side Request Forgery (SSRF)

Publication date:

30/09/2026

Last modified:

01/10/2026

Description

A flaw was found in Moodle. Incorrect handling of IPv4-mapped IPv6 addresses within the URL downloader&#39;s host-blocking logic allows an authenticated remote user to bypass blocked-host restrictions. By supplying a crafted URL, an attacker can induce the server to make requests to restricted destinations, leading to Server-Side Request Forgery (SSRF).

Impact

Vector 3.x

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

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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

Base Score 3.x

4.30

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-2026-102577

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools