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CVE-2026-81780— WordPress Hash Form plugin <= 1.4.2 - Arbitrary File Upload vulnerability

Quick assessment

Affected
hashthemes Hash Form
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

hashthemes hash form是hashthemes公司开源的一个创建自定义表单的拖拽式工具。 hashthemes hash form 1.4.2及之前版本存在任意文件上传漏洞，该漏洞源于未经身份验证即可上传任意文件。

CVSS 10.0 · Critical EPSS 0.52% · P43

Affected Version Matrix 1

VendorProduct Version RangeStatus
hashthemes Hash Form n/a≤ 1.4.2 affected
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I. Basic Information for CVE-2026-81780

Vulnerability Information
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Vulnerability Title
WordPress Hash Form plugin <= 1.4.2 - Arbitrary File Upload vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
hashthemes hash form 任意文件上传漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
hashthemes hash form是hashthemes公司开源的一个创建自定义表单的拖拽式工具。 hashthemes hash form 1.4.2及之前版本存在任意文件上传漏洞，该漏洞源于未经身份验证即可上传任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
hashthemes Hash Form n/a ~ 1.4.2 -

II. Public POCs for CVE-2026-81780

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III. Intelligence Information for CVE-2026-81780

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News Coverage for CVE-2026-81780 (1)

IV. Related Vulnerabilities

Same product: Hash Form
Same vendor: hashthemes
Same weakness: CWE-434

V. Comments for CVE-2026-81780

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