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CVE-2026-5581— Multi Uploader for Gravity Forms <= 1.1.8 - Missing Authorization to Unauthenticated Arbitrary Media Deletion

Quick assessment

Affected
sh1zen Multi Uploader for Gravity Forms
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.

WordPress Multi Uploader for Gravity Forms是WordPress基金会的一款为表单增强多文件上传功能的插件。 WordPress Multi Uploader for Gravity Forms 1.1.8及之前版本存在授权问题漏洞，该漏洞源于plupload_ajax_delete_file函数缺少能力检查，且CSRF保护用的nonce暴露，可能导致未经身份验证的攻击者通过提供附件ID永久删除任意WordPress媒体附件，导致媒体库完全破坏。

CVSS 9.1 · Critical EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1485 · Data Destruction

Affected Version Matrix 1

VendorProduct Version RangeStatus
sh1zen Multi Uploader for Gravity Forms ≤ 1.1.8 affected
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I. Basic Information for CVE-2026-5581

Vulnerability Information
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Vulnerability Title
Multi Uploader for Gravity Forms <= 1.1.8 - Missing Authorization to Unauthenticated Arbitrary Media Deletion
Source: CVE Program / CVE List V5
Vulnerability Description
The Multi Uploader for Gravity Forms plugin for WordPress is vulnerable to unauthorized arbitrary media deletion in all versions up to, and including, 1.1.8. This is due to missing capability checks in the `plupload_ajax_delete_file()` function, which is registered via `wp_ajax_nopriv_gfmu_delete_file`. The nonce intended for CSRF protection is exposed on any public-facing page containing a multi-uploader form field via the `GFMU_options` JavaScript object. This makes it possible for unauthenticated attackers to permanently delete any WordPress media attachment by supplying its attachment ID, potentially leading to complete media library destruction.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Multi Uploader for Gravity Forms 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Multi Uploader for Gravity Forms是WordPress基金会的一款为表单增强多文件上传功能的插件。 WordPress Multi Uploader for Gravity Forms 1.1.8及之前版本存在授权问题漏洞，该漏洞源于plupload_ajax_delete_file函数缺少能力检查，且CSRF保护用的nonce暴露，可能导致未经身份验证的攻击者通过提供附件ID永久删除任意WordPress媒体附件，导致媒体库完全破坏。
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
sh1zen Multi Uploader for Gravity Forms 0 ~ 1.1.8 -

II. Public POCs for CVE-2026-5581

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III. Intelligence Information for CVE-2026-5581

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Patches & Fixes for CVE-2026-5581 (1)

Vendor Advisories for CVE-2026-5581 (1)

Other References for CVE-2026-5581 (1)

IV. Related Vulnerabilities

Same product: Multi Uploader for Gravity Forms
Same vendor: sh1zen
Same weakness: CWE-862

V. Comments for CVE-2026-5581

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