CVE-2026-102577CWE-918ssrf

CVE-2026-102577

Medium · published September 30, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
15.0
In the wild
Unconfirmed
What it is

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).

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00246 · 15.0th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-30T13:17Z
Affected products (4)
ProductVersionsFixed in
moodle/moodle< 4.5.134.5.13
moodle/moodle≥ 5.0.0, < 5.0.95.0.9
moodle/moodle≥ 5.1.0, < 5.1.65.1.6
moodle/moodle≥ 5.2.0, < 5.2.25.2.2
References (4)
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]
EPSS history
Timeline
  • 01 OCT 03:44Z
    EPSS moved — → 0%
    epss
  • 30 SEP 08:35Z
    Moodle: ssrf risk in url downloader via ipv4-mapped ipv6 address bypass
    cvelistv5