CVE-2025-53625: Universal omega/dynamic page list3 DynamicPageList3 Vulnerability Exposes Hidden/suppressed Usernames Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7pgw-q3qp-6pgq",
  "modified" : "2025-07-10T23:23:34Z",
  "published" : "2025-07-10T13:10:20Z",
  "aliases" : [ "CVE-2025-53625" ],
  "summary" : "DynamicPageList3 vulnerability exposes hidden/suppressed usernames",
  "details" : "### Summary\nSeveral `#dpl` parameters can leak usernames that have been hidden using revision deletion, suppression, or the `hideuser` block flag.\n\n### Details\nThe parameters `adduser`, `addauthor`, and `addlasteditor` output the page creator or last editor using the `%USER%` placeholder. These display the actual username, even when that name has been hidden using revision deletion, suppression (oversight), or `hideuser`.\n\nThe `%CONTRIBUTOR%` placeholder, used with `addcontribution`, behaves similarly and also reveals hidden usernames.\n\nIn addition, the following parameters can expose suppressed usernames when combined with `%USER%` or similar output placeholders:\n- `lastrevisionbefore`\n- `allrevisionsbefore`\n- `firstrevisionsince`\n- `allrevisionssince`\n\nThese parameters reference specific revisions and allow output of user-related metadata. If a username has been hidden from those revisions, it may still appear in the output.\n\nFurther, the parameters `createdby`, `notcreatedby`, `modifiedby`, `notmodifiedby`, `lastmodifiedby`, and `notlastmodifiedby` accept usernames as input. When the correct (suppressed) username is used, the query may return matching pages or edits. This can reveal the presence and association of a hidden identity, even if not displayed directly. However, this is a more indirect exposure than the output parameters mentioned above.\n\n### Proof of Concept\n\n1. Create a page while logged in as a user.\n2. Revision delete or suppress the username from the page history.\n3. Use a DPL query with one of the affected parameters.\n4. The output reveals the hidden username.\n\n#### Example\n\nThe following query reveals the suppressed username `Example user`:\n\n```wikitext\n{{#dpl:\n| title = File:Example.png\n| addauthor = true\n| format = ,%USER%,,\n}}\n```\n\nSimilar behavior occurs using parameters like `lastrevisionbefore` with `%USER%` in the `format` string.\n\n### Impact\nThis issue causes the exposure of usernames that were intentionally hidden by administrators. It directly undermines revision deletion, user suppression, and block-related privacy measures. In some cases, usernames can be revealed both directly through output and indirectly through query behavior.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "universal-omega/dynamic-page-list3"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.6.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Universal-Omega/DynamicPageList3/security/advisories/GHSA-7pgw-q3qp-6pgq"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-53625"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Universal-Omega/DynamicPageList3/commit/a3dae0c89fb4214390c29ceffa23bbe2099986d6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Universal-Omega/DynamicPageList3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-359" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-07-10T13:10:20Z",
    "nvd_published_at" : "2025-07-10T19:15:26Z"
  }
}