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cve.new
GHSA-p5j7-26wj-423jmedium

Moodle allows discovery of an author's username

Check your stack

The advisory, in context

The forum_print_latest_discussions function in mod/forum/lib.php in Moodle through 2.4.11, 2.5.x before 2.5.8, 2.6.x before 2.6.5, and 2.7.x before 2.7.2 allows remote authenticated users to bypass the individual answer-posting requirement without the mod/forum:viewqandawithoutposting capability, and discover an author's username, by leveraging the student role and visiting a Q&A forum.

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

Ecosystem versions

Earlier releases before 2.5.8

Fixed in 2.5.8

31 explicitly affected versions

v2.3.10, v2.3.11, v2.3.4, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.0-rc1, v2.4.1, v2.4.10, v2.4.11, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.0-beta, v2.5.0-rc1, v2.5.1, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7

View affected-version evidence
{
  "ranges": [
    {
      "events": [
        {
          "introduced": "0"
        },
        {
          "fixed": "2.5.8"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v2.3.10",
    "v2.3.11",
    "v2.3.4",
    "v2.3.5",
    "v2.3.6",
    "v2.3.7",
    "v2.3.8",
    "v2.3.9",
    "v2.4.0",
    "v2.4.0-rc1",
    "v2.4.1",
    "v2.4.10",
    "v2.4.11",
    "v2.4.2",
    "v2.4.3",
    "v2.4.4",
    "v2.4.5",
    "v2.4.6",
    "v2.4.7",
    "v2.4.8",
    "v2.4.9",
    "v2.5.0",
    "v2.5.0-beta",
    "v2.5.0-rc1",
    "v2.5.1",
    "v2.5.2",
    "v2.5.3",
    "v2.5.4",
    "v2.5.5",
    "v2.5.6",
    "v2.5.7"
  ]
}
Ecosystem versions

From 2.6.0 before 2.6.5

Fixed in 2.6.5

5 explicitly affected versions

v2.6.0, v2.6.1, v2.6.2, v2.6.3, v2.6.4

View affected-version evidence
{
  "ranges": [
    {
      "events": [
        {
          "introduced": "2.6.0"
        },
        {
          "fixed": "2.6.5"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v2.6.0",
    "v2.6.1",
    "v2.6.2",
    "v2.6.3",
    "v2.6.4"
  ]
}
Ecosystem versions

From 2.7.0 before 2.7.2

Fixed in 2.7.2

2 explicitly affected versions

v2.7.0, v2.7.1

View affected-version evidence
{
  "ranges": [
    {
      "events": [
        {
          "introduced": "2.7.0"
        },
        {
          "fixed": "2.7.2"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v2.7.0",
    "v2.7.1"
  ]
}

References