UBUNTU-CVE-2026-102577
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).
UBUNTU-CVE-2026-102577
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:UBUNTU-CVE-2026-102577
moodle
Source reference: /affected/0/package/name
- Affected versions
- 2.7.9+dfsg-1
Source reference:
/affected/0/versions2.7.10+dfsg-1Source reference:
/affected/0/versions2.7.11+dfsg-1Source reference:
/affected/0/versions2.7.11+dfsg-2Source reference:
/affected/0/versions2.7.12+dfsg-1Source reference:
/affected/0/versions3.0.3+dfsg-0ubuntu1Source reference:
/affected/0/versions3.0.3+dfsg-0ubuntu1+esm1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
moodle
Source reference: /affected/1/package/name
- Affected versions
- 3.0.3+dfsg-0ubuntu1
Source reference:
/affected/1/versions3.0.3+dfsg-0ubuntu1+esm1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "moodle",
"purl": "pkg:deb/ubuntu/moodle?arch=source&distro=esm-apps-legacy%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"2.7.9+dfsg-1",
"2.7.10+dfsg-1",
"2.7.11+dfsg-1",
"2.7.11+dfsg-2",
"2.7.12+dfsg-1",
"3.0.3+dfsg-0ubuntu1",
"3.0.3+dfsg-0ubuntu1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102577.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "moodle",
"binary_version": "3.0.3+dfsg-0ubuntu1+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "moodle",
"purl": "pkg:deb/ubuntu/moodle?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"3.0.3+dfsg-0ubuntu1",
"3.0.3+dfsg-0ubuntu1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102577.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "moodle",
"binary_version": "3.0.3+dfsg-0ubuntu1+esm1"
}
]
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #51943 · Revision 1
- Added to Heist Feed
- Publisher date