WPeMatico RSS Feed Fetcher <= 2.9 - Unauthenticated Stored Cross-Site Scripting via RSS Feed Content Import

{
  "id": "1bc198ffa7c0b18d487484093c6cfb34003b2b04c48447d53b37950547fdd8f3",
  "url": "https://osv.dev/vulnerability/CVE-2026-110252",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "WPeMatico RSS Feed Fetcher <= 2.9 - Unauthenticated Stored Cross-Site Scripting via RSS Feed Content Import",
    "summary": "The WPeMatico RSS Feed Fetcher plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.9 This is due to the plugin removing WordPress's wp_filter_post_kses filter from content_save_pre immediately before calling wp_insert_post() with RSS feed content, whenever the campaign's last editor had the unfiltered_html capability — a flag the plugin sets automatically for every admin-saved campaign. Imported item content is taken raw from $item->get_content(), only entity-decoded, and stored verbatim in post_content. This makes it possible for unauthenticated attackers, who publish or compromise an RSS feed that an administrator has subscribed a WPeMatico campaign to, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected imported post.",
    "evidence": "osv:CVE-2026-110252",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-110252",
      "aliases": [
        "CVE-2026-110252"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/etruel/wpematico",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "44c4894a0ad92a711c534ad4d822c0b5d7c3dffe"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.9"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "44c4894a0ad92a711c534ad4d822c0b5d7c3dffe"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.9",
            "2.8.22",
            "2.8.20",
            "2.8.19",
            "2.8.18",
            "2.8.17",
            "2.8.16",
            "2.8.13",
            "2.8.14",
            "2.8.12",
            "2.8.7",
            "2.8.5",
            "2.8.4",
            "2.8.3",
            "2.8.2",
            "2.8",
            "2.7.10",
            "2.7.9",
            "2.7.8",
            "2.7.7.1",
            "2.7.7",
            "2.7.6",
            "2.7.4",
            "2.7.3",
            "2.7.2",
            "2.7",
            "2.6.24",
            "2.6.25",
            "2.6.22",
            "2.6.21",
            "2.6.20.2",
            "2.6.20",
            "2.6.19",
            "2.6.18",
            "2.6.17",
            "2.6.16",
            "2.6.15",
            "2.6.12",
            "2.6.11",
            "2.6.10",
            "2.6.9",
            "2.6.8",
            "2.6.7",
            "2.6.6",
            "2.6.4",
            "2.6.3",
            "2.6.2",
            "2.6.1",
            "2.5.3",
            "2.5.1",
            "2.5",
            "2.4.2",
            "2.4.2RC2",
            "2.3.10",
            "2.3.4",
            "2.3.3",
            "2.3.2",
            "2.3",
            "2.2.2",
            "2.2",
            "2.1.2",
            "2.1.1",
            "2.1",
            "2.0",
            "1.9.4",
            "1.9.3",
            "1.9.2",
            "1.9",
            "1.8.5",
            "1.8.4",
            "1.8.3",
            "1.8.2",
            "1.8.1",
            "1.7.3",
            "1.7.2",
            "1.7",
            "1.6.2",
            "1.6.1",
            "1.6",
            "1.5",
            "1.4.2",
            "1.4.1",
            "1.4",
            "1.3.8.4",
            "1.3.8.3",
            "1.3.8.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110252.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.813383212Z",
      "provider": "osv",
      "references": [
        "https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/campaign_fetch.php#L400",
        "https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/campaign_fetch.php#L773",
        "https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/campaign_fetch.php#L777",
        "https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/wpematico_functions.php#L3226",
        "https://plugins.trac.wordpress.org/browser/wpematico/tags/2.9/includes/wpematico_functions.php#L3326",
        "https://plugins.trac.wordpress.org/changeset/3747465/wpematico/trunk/includes/campaign_fetch.php",
        "https://www.wordfence.com/threat-intel/vulnerabilities/id/e87fc1bf-af05-4089-a164-8a2e73c68e8c?source=cve",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110252.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-110252",
        "https://github.com/etruel/wpematico/commit/44c4894a0ad92a711c534ad4d822c0b5d7c3dffe"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "Wordfence",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110252.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-110252",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500089,
  "published_at": "2026-10-16T06:41:06.918+00:00"
}