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UBUNTU-CVE-2026-102577

Type: advisorySource: OSV1 source record

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).

Announced Source revision 1
Original source ↗

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/versions

2.7.10+dfsg-1

Source reference: /affected/0/versions

2.7.11+dfsg-1

Source reference: /affected/0/versions

2.7.11+dfsg-2

Source reference: /affected/0/versions

2.7.12+dfsg-1

Source reference: /affected/0/versions

3.0.3+dfsg-0ubuntu1

Source reference: /affected/0/versions

3.0.3+dfsg-0ubuntu1+esm1

Source 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/versions

3.0.3+dfsg-0ubuntu1+esm1

Source 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
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