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VULNERABILITIES

CVE-2026-102577 Details

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).

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88779 [email protected]
https://access.redhat.com/security/cve/CVE-2026-102577 [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2543604 [email protected]
https://moodle.org/mod/forum/discuss.php?d=482495 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-918Server-Side Request Forgery (SSRF)[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-102577
NVD Published Date:
Sep 30, 2026
NVD Last Modified:
Sep 30, 2026
Source:
[email protected]
CVE-2026-102577 Details - Not Deferred