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CVE-2026-35063— Missing Authorization in OpenPLC_V3

Quick assessment

Affected
OpenPLC_V3 OpenPLC_V3
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.

OpenPLC Runtime version 3是Thiago Alves个人开发者的一个可编程逻辑控制器。 OpenPLC Runtime version 3 存在安全漏洞，该漏洞源于REST API端点仅检查JWT存在但未验证调用者角色，可能导致经过身份验证的用户删除其他用户或创建具有管理员权限的新账户。

AI Predicted 9.1 Difficulty: Easy EPSS 0.43% · P35
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I. Basic Information for CVE-2026-35063

Vulnerability Information
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Vulnerability Title
Missing Authorization in OpenPLC_V3
Source: CVE Program / CVE List V5
Vulnerability Description
OpenPLC_V3 REST API endpoint checks for JWT presence but never verifies the caller's role. Any authenticated user with role=user can delete any other user, including administrators, by specifying their user ID or they can create new accounts with role=admin, escalating to full administrator access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
OpenPLC Runtime version 3 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenPLC Runtime version 3是Thiago Alves个人开发者的一个可编程逻辑控制器。 OpenPLC Runtime version 3 存在安全漏洞，该漏洞源于REST API端点仅检查JWT存在但未验证调用者角色，可能导致经过身份验证的用户删除其他用户或创建具有管理员权限的新账户。
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
OpenPLC_V3 OpenPLC_V3 All versions -

II. Public POCs for CVE-2026-35063

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III. Intelligence Information for CVE-2026-35063

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Same Patch Batch · OpenPLC_V3 · 2026-04-09 · 3 CVEs total

CVE-2026-35556 Plaintext storage of a password in OpenPLC_V3
CVE-2026-28205 Initialization of a resource with an insecure default in OpenPLC_V3

IV. Related Vulnerabilities

Same product: OpenPLC_V3
Same vendor: OpenPLC_V3
Same weakness: CWE-862

V. Comments for CVE-2026-35063

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