CVE-2026-16558 (GCVE-0-2026-16558)

Vulnerability from cvelistv5 – Published: 2026-08-08 06:00 – Updated: 2026-08-08 06:00
VLAI
Title
YMC Filter < 3.12.8 - Contributor+ Stored XSS via Layout Builder Schema
Summary
The YMC Filter WordPress plugin before 3.12.8 does not sanitize and escape a layout builder setting before outputting it on a public endpoint, and does not verify object ownership when the setting is saved, allowing users with the Contributor role and above to store JavaScript that executes in the browser of any visitor viewing an affected filter.
Severity
No CVSS data available.
Assigner
References
URL Tags
https://wpscan.com/vulnerability/06ba0551-deab-41… exploitvdb-entrytechnical-description
Impacted products
Vendor Product Version
Unknown YMC Filter Affected: 3.6.0 , < 3.12.8 (semver)
Create a notification for this product.
Credits
Usama Arshad WPScan
Show details on NVD website

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "YMC Filter",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "3.12.8",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Usama Arshad"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The YMC Filter WordPress plugin before 3.12.8 does not sanitize and escape a layout builder setting before outputting it on a public endpoint, and does not verify object ownership when the setting is saved, allowing users with the Contributor role and above to store JavaScript that executes in the browser of any visitor viewing an affected filter."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-79 Cross-Site Scripting (XSS)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-08T06:00:11.244Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/06ba0551-deab-41fb-b501-eef0727b431a/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "YMC Filter \u003c 3.12.8 - Contributor+ Stored XSS via Layout Builder Schema",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-16558",
    "datePublished": "2026-08-08T06:00:11.244Z",
    "dateReserved": "2026-07-22T12:09:48.181Z",
    "dateUpdated": "2026-08-08T06:00:11.244Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-16558\",\"sourceIdentifier\":\"contact@wpscan.com\",\"published\":\"2026-08-08T07:17:10.130\",\"lastModified\":\"2026-08-08T07:17:10.130\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The YMC Filter WordPress plugin before 3.12.8 does not sanitize and escape a layout builder setting before outputting it on a public endpoint, and does not verify object ownership when the setting is saved, allowing users with the Contributor role and above to store JavaScript that executes in the browser of any visitor viewing an affected filter.\"}],\"affected\":[{\"source\":\"contact@wpscan.com\",\"affectedData\":[{\"vendor\":\"Unknown\",\"product\":\"YMC Filter\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"3.6.0\",\"lessThan\":\"3.12.8\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://wpscan.com/vulnerability/06ba0551-deab-41fb-b501-eef0727b431a/\",\"source\":\"contact@wpscan.com\"}]}}"
  }
}



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Nomenclature

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