A flaw was found in Moodle. Incorrect handling of IPv4-mapped IPv6 addresses within the URL downloader'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).
History

Thu, 01 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

Wed, 30 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 30 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Moodle
Moodle moodle
Vendors & Products Moodle
Moodle moodle

Wed, 30 Sep 2026 09:00:00 +0000

Type Values Removed Values Added
Description A flaw was found in Moodle. Incorrect handling of IPv4-mapped IPv6 addresses within the URL downloader'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).
Title Moodle: ssrf risk in url downloader via ipv4-mapped ipv6 address bypass
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: fedora

Published: 2026-09-30T08:35:59.663Z

Updated: 2026-09-30T14:37:24.853Z

Reserved: 2026-09-29T14:03:38.493Z

Link: CVE-2026-102577

cve-icon Vulnrichment

Updated: 2026-09-30T14:37:21.338Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-30T09:17:14.660

Modified: 2026-10-01T14:14:18.313

Link: CVE-2026-102577

cve-icon Redhat

No data.