4.3

CVE-2026-102577

Moodle: ssrf risk in url downloader via ipv4-mapped ipv6 address bypass

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).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Moodle ≫ Moodle Version < 4.5.13
Moodle ≫ Moodle Version >= 5.0.0 < 5.0.9
Moodle ≫ Moodle Version >= 5.1.0 < 5.1.6
Moodle ≫ Moodle Version >= 5.2.0 < 5.2.2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.165
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
patrick@puiterwijk.org 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE-918 Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

https://moodle.org/mod/forum/discuss.php?d=482495
Vendor Advisory
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88779
Patch
https://access.redhat.com/security/cve/CVE-2026-102577
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2543604
Third Party Advisory
Issue Tracking