Vulnerability-Lookup

GHSA-7VC3-QMP9-P8W8

Vulnerability from github – Published: 2026-10-07 06:33 – Updated: 2026-10-07 06:33

Details

The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in ExceptionalElements::image_element(), which concatenates a user-meta value straight into an <img src="…"> attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a kirki-register element, which prints the required element nonce into the public markup.

Severity

7.2 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-102173"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-07T06:16:33Z",
    "severity": "HIGH"
  },
  "details": "The Kirki \u2013 Freeform Page Builder, Website Builder \u0026 Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `\u003cimg src=\"\u2026\"\u003e` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup.",
  "id": "GHSA-7vc3-qmp9-p8w8",
  "modified": "2026-10-07T06:33:01Z",
  "published": "2026-10-07T06:33:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102173"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L361"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L389"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L76"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/ElementGenerator.php#L259"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/ExceptionalElements.php#L1079"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/ExceptionalElements.php#L1184"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/Utils.php#L308"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/HelperFunctions.php#L1151"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3718900/kirki/trunk/includes/Frontend/Preview/ExceptionalElements.php"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3718900%40kirki%2Ftags%2F6.3.2\u0026old=3697265%40kirki%2Ftags%2F6.3.1"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/368001e9-3806-41d5-902e-0facf7fb31ff?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-102173 (GCVE-0-2026-102173)

Vulnerability from cvelistv5 – Published: 2026-10-07 05:30 – Updated: 2026-10-07 17:05

Title

Kirki – Freeform Page Builder, Website Builder & Customizer <= 6.3.1 - Unauthenticated Stored Cross-Site Scripting via Registration Metadata

Summary

The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `<img src="…">` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup.

Severity

7.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-07 16:08 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

Wordfence CNA under the mitre root

CNA scorecard C 65/100 over 2108 records in the last 180 days details

References

11 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/kirki/…
https://plugins.trac.wordpress.org/browser/kirki/…
https://plugins.trac.wordpress.org/browser/kirki/…
https://plugins.trac.wordpress.org/browser/kirki/…
https://plugins.trac.wordpress.org/browser/kirki/…
https://plugins.trac.wordpress.org/browser/kirki/…
https://plugins.trac.wordpress.org/browser/kirki/…
https://plugins.trac.wordpress.org/browser/kirki/…
https://plugins.trac.wordpress.org/changeset?repo…
https://plugins.trac.wordpress.org/changeset/3718…

Impacted products

1 product

Vendor	Product	Version
themeum	Kirki – Freeform Page Builder, Website Builder & Customizer	Affected: 0 , ≤ 6.3.1 (semver)

Credits

Hippolyte Quéré (Hippie) (Hippie)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-102173",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-07T16:08:31.005389Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-07T17:05:30.285Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Kirki \u2013 Freeform Page Builder, Website Builder \u0026 Customizer",
          "vendor": "themeum",
          "versions": [
            {
              "lessThanOrEqual": "6.3.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Hippolyte Qu\u00e9r\u00e9 (Hippie) (Hippie)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Kirki \u2013 Freeform Page Builder, Website Builder \u0026 Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `\u003cimg src=\"\u2026\"\u003e` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-07T05:30:40.929Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/368001e9-3806-41d5-902e-0facf7fb31ff?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/ExceptionalElements.php#L1184"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/ExceptionalElements.php#L1079"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/HelperFunctions.php#L1151"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L361"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L389"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L76"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/ElementGenerator.php#L259"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/Utils.php#L308"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3718900%40kirki%2Ftags%2F6.3.2\u0026old=3697265%40kirki%2Ftags%2F6.3.1"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3718900/kirki/trunk/includes/Frontend/Preview/ExceptionalElements.php"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-28T19:14:50.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-10-06T16:28:09.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Kirki \u2013 Freeform Page Builder, Website Builder \u0026 Customizer \u003c= 6.3.1 - Unauthenticated Stored Cross-Site Scripting via Registration Metadata"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-102173",
    "datePublished": "2026-10-07T05:30:40.929Z",
    "dateReserved": "2026-09-28T17:50:55.129Z",
    "dateUpdated": "2026-10-07T17:05:30.285Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GHSA-7VC3-QMP9-P8W8

CVE-2026-102173 (GCVE-0-2026-102173)

Tags

Sightings

Nomenclature

Related by attack behaviour