CVE-2026-88997 (GCVE-0-2026-88997)

Vulnerability from cvelistv5 – Published: 2026-09-23 06:00 – Updated: 2026-09-23 06:00
VLAI
Title
JSM Show Post Metadata < 4.9.1 - Contributor+ Stored XSS via Custom Field Meta Key
Summary
The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key before outputting it into an inline event-handler attribute in an admin-facing meta box, allowing users with contributor-level access and above to inject arbitrary JavaScript that executes in the session of a higher-privileged user who reviews the affected post.
Severity
No CVSS data available.
CWE
Assigner
References
URL Tags
https://wpscan.com/vulnerability/1699d3aa-29ca-41… exploitvdb-entrytechnical-description
Impacted products
Vendor Product Version CPE status
Unknown JSM Show Post Metadata Affected: 0 , < 4.9.1 (semver)
guessed Create a notification for this product.
Credits
pervinzahidli WPScan
Show details on NVD website
To clipboard 

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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "pervinzahidli"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
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          "value": "The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key before outputting it into an inline event-handler attribute in an admin-facing meta box, allowing users with contributor-level access and above to inject arbitrary JavaScript that executes in the session of a higher-privileged user who reviews the affected post."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-79 Cross-Site Scripting (XSS)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-23T06:00:21.546Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/1699d3aa-29ca-4197-8e3b-0b03ecce751a/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "JSM Show Post Metadata \u003c 4.9.1 - Contributor+ Stored XSS via Custom Field Meta Key",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-88997",
    "datePublished": "2026-09-23T06:00:21.546Z",
    "dateReserved": "2026-09-10T16:07:55.530Z",
    "dateUpdated": "2026-09-23T06:00:21.546Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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  "vulnerability-lookup:meta": {
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                "product": "JSM Show Post Metadata",
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                    "version": "0",
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        ],
        "id": "CVE-2026-88997",
        "lastModified": "2026-09-23T06:17:04.967",
        "metrics": {},
        "published": "2026-09-23T06:17:04.967",
        "references": [
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        ],
        "sourceIdentifier": "contact@wpscan.com",
        "vulnStatus": "Received"
      }
    }
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}



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