{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "5.0.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "5dd7fe00df2816b692f8ea262c6fa8cdee0b26b7"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "V5.0.0",
                "range": [
                  {
                    "fixed": "b6e590a74859a65d8b3168ea9d54b5517407ed9f"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b6e590a74859a65d8b3168ea9d54b5517407ed9f"
            },
            {
              "fixed": "5dd7fe00df2816b692f8ea262c6fa8cdee0b26b7"
            }
          ],
          "repo": "https://github.com/jcrodriguez-dis/moodle-mod_vpl",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113683.json"
  },
  "details": "VPL (Virtual Programming Lab) for Moodle before 5.0.0 contains a reflected cross-site scripting vulnerability that allows remote attackers to inject script via unencoded filename1/filename2 parameters in similarity/diff.php. Attackers can craft a diff.php link with a JavaScript payload that runs when a user holding mod/vpl:similarity opens it, performing actions or disclosing data under their session.",
  "id": "CVE-2026-113683",
  "modified": "2026-10-21T02:30:40.625369172Z",
  "published": "2026-10-20T15:40:43.190Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113683.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jcrodriguez-dis/moodle-mod_vpl"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/jcrodriguez-dis/moodle-mod_vpl/blob/V4.5.0/similarity/diff.class.php#L412-L419"
    },
    {
      "type": "FIX",
      "url": "https://github.com/jcrodriguez-dis/moodle-mod_vpl/commit/5dd7fe00df2816b692f8ea262c6fa8cdee0b26b7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/jcrodriguez-dis/moodle-mod_vpl/releases/tag/V5.0.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113683"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/vpl-for-moodle-before-5.0.0-reflected-xss-via-similarity-diff-php-filename"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "VPL for Moodle before 5.0.0 Reflected XSS via similarity/diff.php filename"
}