Moodle: students can view other users in "only see own membership" groups

{
  "id": "a5465ea387ea35cba87cf590f3c3b1ebb0d3e1f37fe0fa6b16495abd2616703d",
  "url": "https://osv.dev/vulnerability/CVE-2023-5542",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Moodle: students can view other users in \"only see own membership\" groups",
    "summary": "Students in \"Only see own membership\" groups could see other students in the group, which should be hidden.",
    "evidence": "osv:CVE-2023-5542",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2023-5542",
      "aliases": [
        "BIT-moodle-2023-5542",
        "CVE-2023-5542",
        "GHSA-8mm2-m2gp-c6x2"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/moodle/moodle",
              "type": "GIT",
              "events": [
                {
                  "introduced": "91e6642f16492fd8a6443e1581e1b14592f74e44"
                },
                {
                  "last_affected": "91e6642f16492fd8a6443e1581e1b14592f74e44"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:moodle:moodle:4.2.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.2.2"
                      },
                      {
                        "last_affected": "4.2.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.2.2",
            "v4.2.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-5542.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.940294072Z",
      "provider": "osv",
      "references": [
        "https://git.moodle.org",
        "https://moodle.org/mod/forum/discuss.php?d=451583",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5542.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-5542",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2243441"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-284"
        ],
        "cna_assigner": "fedora",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.2.2"
                  },
                  {
                    "last_affected": "4.2.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5542.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-5542",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496864,
  "published_at": "2023-11-09T19:27:38.733+00:00"
}