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CVE-2026-19677— Authentication Bypass Leading to Server-Side Command Execution

Quick assessment

Affected
onPhase onPhase 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.

在公共 onPhase/frevvo 注册表单（版本 11.0.14）中存在一个身份验证绕过漏洞。该漏洞允许未经身份验证的远程攻击者通过操纵包含有效租户名称和现有用户标识符的注册参数，以任意租户用户的身份通过身份验证，获取 TenantAdmin（租户管理员）和 Designer（设计者）权限，并执行任意操作系统命令。

CVSS 9.3 · Critical
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I. Basic Information for CVE-2026-19677

Vulnerability Information
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Vulnerability Title
Authentication Bypass Leading to Server-Side Command Execution
Source: CVE Program / CVE List V5
Vulnerability Description
An authentication bypass vulnerability in the public onPhase/ frevvo registration form version 11.0.14 allows an unauthenticated remote attacker to authenticate as an arbitrary tenant user, obtain TenantAdmin and Designer privileges, and execute arbitrary operating system commands via manipulation of registration parameters containing a valid tenant name and existing user identifier.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
onPhase onPhase Forms 11.0.14 -

II. Public POCs for CVE-2026-19677

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III. Intelligence Information for CVE-2026-19677

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Other References for CVE-2026-19677 (2)

IV. Related Vulnerabilities

Same product: onPhase Forms
Same vendor: onPhase
Same weakness: CWE-306

V. Comments for CVE-2026-19677

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