ShareOpenly has Cross-Site Scripting (XSS) via Missing esc_url() on Shared URL in Content Output

{
  "id": "8fce117d3135bc85ae7d8bd9d226027c1cd384c3d33aee567a6d79150f10118e",
  "url": "https://osv.dev/vulnerability/CVE-2026-48094",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ShareOpenly has Cross-Site Scripting (XSS) via Missing esc_url() on Shared URL in Content Output",
    "summary": "The ShareOpenly WordPress plugin prior to version 1.2.1 contains a Cross-Site Scripting vulnerability caused by the absence of WordPress's `esc_url()` escaping function on the `$url` variable before it is rendered into HTML content. This variable is constructed from `home_url( add_query_arg( array(), $wp->request ) )` and is concatenated directly into an HTML `href` attribute on every singular post or page where the plugin's sharing link is displayed. WordPress's security handbook mandates that every URL placed in HTML output must be passed through `esc_url()`, which both HTML-encodes special characters (converting `\"`, `<`, `>` into their safe HTML entity equivalents) and strips dangerous URI schemes such as `javascript:` and `data:`. The omission of this function means that if the `$url` value ever contains HTML-special characters or a dangerous URI scheme — through a `home_url` WordPress filter applied by another plugin or theme, through certain web server or hosting configurations, or through future code changes — the unescaped content will be injected verbatim into the rendered HTML of every post or page on the site. Version 1.2.1 contains a patch for the issue.",
    "evidence": "osv:CVE-2026-48094",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-48094",
      "aliases": [
        "CVE-2026-48094",
        "GHSA-v43f-f7jq-7hh5"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dartiss/shareopenly",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "faf58f0497f3a024ea52c425122ef5aa22e0d7f6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "faf58f0497f3a024ea52c425122ef5aa22e0d7f6"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "faf58f0497f3a024ea52c425122ef5aa22e0d7f6"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "1.2.1"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.2",
            "1.1",
            "1.0.1",
            "1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48094.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.815705257Z",
      "provider": "osv",
      "references": [
        "https://github.com/dartiss/shareopenly/releases/tag/1.2.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48094.json",
        "https://github.com/dartiss/shareopenly/security/advisories/GHSA-v43f-f7jq-7hh5",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-48094",
        "https://github.com/dartiss/shareopenly/commit/faf58f0497f3a024ea52c425122ef5aa22e0d7f6"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48094.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-48094",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518427,
  "published_at": "2026-08-07T12:37:17.468+00:00"
}