Vulnerability-Lookup

CNVD-2026-34505

Vulnerability from cnvd - Published: 2026-08-31

Title

WordPress Fluent Forms plugin跨站脚本漏洞

Description

WordPress Fluent Forms plugin是一款专为WordPress设计的‌拖放式表单构建插件。 WordPress Fluent Forms plugin存在跨站脚本漏洞，该漏洞源于应用对用户提供的数据缺乏有效过滤与转义，攻击者可利用该漏洞注入任意Web脚本，当管理员在WordPress管理后台查看表单的提交日志时在浏览器中执行。

Severity

中

Patch Name

WordPress Fluent Forms plugin跨站脚本漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级程序修复该安全问题，详情见厂商官网: https://wordpress.org/plugins/fluentform/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-18146

Impacted products

Name
WordPress Fluent Forms plugin <=6.2.11

Show details on source website

JSON

To clipboard

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  "submitTime": "2026-08-20",
  "title": "WordPress Fluent Forms plugin\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e"
}

CVE-2026-18146 (GCVE-0-2026-18146)

Vulnerability from cvelistv5 – Published: 2026-08-13 06:38 – Updated: 2026-08-13 13:00

Title

Fluent Forms <= 6.2.11 - Unauthenticated Stored Cross-Site Scripting via Notification Smartcode Values

Summary

The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Notification Smartcode Values in all versions up to, and including, 6.2.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in the browser of an administrator (or any user with the Fluent Forms entry-viewing capability) when they view the form's entry Submission Logs in the WordPress admin dashboard. Exploitation requires that a site administrator or Fluent Forms manager has configured an email notification whose subject or static (direct) Send To value references an attacker-influenced Smartcode such as an input_password field value, a cookie value, or submission.response.

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 2026-08-13 13:00 UTC

CWE

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

Assigner

Wordfence mitre root Scorecard

References

9 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/fluent…
https://plugins.trac.wordpress.org/browser/fluent…
https://plugins.trac.wordpress.org/browser/fluent…
https://plugins.trac.wordpress.org/browser/fluent…
https://plugins.trac.wordpress.org/browser/fluent…
https://plugins.trac.wordpress.org/changeset?repo…
https://plugins.trac.wordpress.org/changeset/3640…
https://plugins.trac.wordpress.org/changeset?old_…

Impacted products

1 product

Vendor	Product	Version
wpmanageninja	Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder	Affected: 0 , ≤ 6.2.11 (semver)

Credits

Adrien Brunner

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-18146",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T13:00:41.828651Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        "providerMetadata": {
          "dateUpdated": "2026-08-13T13:00:48.626Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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    "cna": {
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          "product": "Fluent Forms \u2013 Customizable Contact Forms, Survey, Quiz, \u0026 Conversational Form Builder",
          "vendor": "wpmanageninja",
          "versions": [
            {
              "lessThanOrEqual": "6.2.11",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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        }
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          "type": "finder",
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          "lang": "en",
          "value": "The Fluent Forms \u2013 Customizable Contact Forms, Survey, Quiz, \u0026 Conversational Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Notification Smartcode Values in all versions up to, and including, 6.2.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in the browser of an administrator (or any user with the Fluent Forms entry-viewing capability) when they view the form\u0027s entry Submission Logs in the WordPress admin dashboard. Exploitation requires that a site administrator or Fluent Forms manager has configured an email notification whose subject or static (direct) Send To value references an attacker-influenced Smartcode such as an input_password field value, a cookie value, or submission.response."
        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
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      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/643f92e2-b14e-4056-97fc-1c631027c54f?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Services/FormBuilder/Notifications/EmailNotification.php#L196"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/boot/globals.php#L98"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Services/FormBuilder/ShortCodeParser.php#L145"
        },
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          "url": "https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Services/FormBuilder/ShortCodeParser.php#L142"
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        },
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        },
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        }
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          "time": "2026-07-28T19:13:22.000Z",
          "value": "Vendor Notified"
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          "time": "2026-08-12T18:34:04.000Z",
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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.

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CNVD-2026-34505

CVE-2026-18146 (GCVE-0-2026-18146)

Tags

Sightings

Nomenclature

Related by attack behaviour