Security advisory

{
  "id": "a6072173f4b3e5ecf8cf5853b8801e68b957bf97a296742d6bf6c9a7d78b4d4b",
  "url": "https://osv.dev/vulnerability/CVE-2026-112111",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-112111",
    "summary": "The Bootstrap Shortcodes plugin for WordPress before 3.4.6 is vulnerable to stored XSS via the id attribute of the [bs_tcontent] shortcode. The bs_tcontent() shortcode handler in inc/bs_tabs.php emits the id attribute value into an unquoted HTML attribute. esc_attr() is applied, but it does not encode space characters, so a space in the supplied value terminates the attribute and any following text is parsed as additional HTML attributes, including JavaScript event handlers. This allows authenticated attackers with Contributor-level access and above to inject arbitrary web script that executes in the browser of any user who views the page and interacts with the injected element.",
    "evidence": "osv:CVE-2026-112111",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-112111",
      "aliases": [
        "CVE-2026-112111"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/thewebshop/bootstrap-shortcodes",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4a8875e2b720d7fee6dfed427297e200eaf45f55"
                },
                {
                  "fixed": "c26659ccb6ddb871c7dee1b77cb81cad63e7a75b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.4.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c26659ccb6ddb871c7dee1b77cb81cad63e7a75b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4a8875e2b720d7fee6dfed427297e200eaf45f55"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "3.4.6"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.4.4",
            "3.4.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112111.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.414933737Z",
      "provider": "osv",
      "references": [
        "https://github.com/TheWebShop/bootstrap-shortcodes/releases/tag/3.4.6",
        "https://wordpress.org/plugins",
        "https://wordpress.org/plugins/bootstrap-shortcodes/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112111.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-112111",
        "https://wordpress.org/plugins/bootstrap-shortcodes/#developers",
        "https://github.com/TheWebShop/bootstrap-shortcodes/commit/c26659ccb6ddb871c7dee1b77cb81cad63e7a75b",
        "https://github.com/TheWebShop/bootstrap-shortcodes",
        "https://plugins.trac.wordpress.org/browser/bootstrap-shortcodes/tags/3.4.4/inc/bs_tabs.php#L84"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112111.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-112111",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521370,
  "published_at": "2026-10-18T22:39:46.933+00:00"
}