{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:scratch-wiki:scratchsig:*:*:*:*:*:mediawiki:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.0.1"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "44c6ff3128a340a68a86bb780ba75ca55dac068c"
            },
            {
              "fixed": "4160a39a20eebeb63a59eb7597a91b961eca6388"
            }
          ],
          "repo": "https://github.com/internationalscratchwiki/wiki-scratchsig",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-gp9v-pg9f-vmp6"
  ],
  "database_specific": {},
  "details": "The ScratchSig extension for MediaWiki before version 1.0.1 allows stored Cross-Site Scripting. Using \u003cscript\u003e tag inside \u003cscratchsig\u003e tag, attackers with edit permission can execute scripts on visitors' browser. With MediaWiki JavaScript API, this can potentially lead to privilege escalation and/or account takeover. This has been patched in release 1.0.1. This has already been deployed to all Scratch Wikis. No workarounds exist other than disabling the extension completely.",
  "id": "CVE-2020-15179",
  "modified": "2026-07-08T05:35:55.882953091Z",
  "published": "2020-09-15T18:15:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/InternationalScratchWiki/wiki-scratchsig/security/advisories/GHSA-gp9v-pg9f-vmp6"
    },
    {
      "type": "FIX",
      "url": "https://github.com/InternationalScratchWiki/wiki-scratchsig/commit/4160a39a20eebeb63a59eb7597a91b961eca6388"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}