CVE-2026-42205— Avo: Broken Access Control: Unauthorized Execution of Arbitrary Action Classes Across Resources
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I. Basic Information for CVE-2026-42205
Vulnerability Information
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Vulnerability Title
Avo: Broken Access Control: Unauthorized Execution of Arbitrary Action Classes Across Resources
Source: NVD (National Vulnerability Database)
Vulnerability Description
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.31.2, a broken access control vulnerability was identified in the ActionsController of the Avo framework. Due to insecure action lookup logic, an authenticated user can execute any Action class (descendants of Avo::BaseAction) on any resource, even if the action is not registered for that specific resource. This leads to Privilege Escalation and unauthorized data manipulation across the entire application. This issue has been patched in version 3.31.2.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Avo 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Avo是Avo开源的一个开源的 ruby on rails 管理面板创建框架。 Avo 3.31.2之前版本存在访问控制错误漏洞，该漏洞源于ActionsController中不安全的操作查找逻辑，可能导致认证用户在任何资源上执行任何操作类，即使该操作未注册到该特定资源，导致权限提升和整个应用程序中的未经授权数据操作。
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
II. Public POCs for CVE-2026-42205
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- Release Release v3.31.2 · avo-hq/avo · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-42205
IV. Related Vulnerabilities
Same product: avo
- CVE-2026-33209
Avo has a XSS vulnerability on `return_to` param - CVE-2024-22411
Cross site scripting in Action messages on Avo - CVE-2024-22191
Stored cross-site scripting (XSS) in `key_value` field in Av - CVE-2023-34102
Possible unsafe reflection / partial denial of service in av - CVE-2023-34103
Stored XSS (Cross Site Scripting) in html content based fiel
Same vendor: avo-hq
- CVE-2026-33209
Avo has a XSS vulnerability on `return_to` param - CVE-2024-22411
Cross site scripting in Action messages on Avo - CVE-2024-22191
Stored cross-site scripting (XSS) in `key_value` field in Av - CVE-2023-34102
Possible unsafe reflection / partial denial of service in av - CVE-2023-34103
Stored XSS (Cross Site Scripting) in html content based fiel
Same weakness: CWE-284
- CVE-2026-8233
Dotouch XproUPF access control - CVE-2026-42569
phpvms: /importer authorization bypass causing full database - CVE-2026-41487
Langfuse: Improper role-based-access control in Langfuse LLM - CVE-2026-42278
UltraDAG: Smart Account Spending Policy Bypass via Pockets - CVE-2026-41646
Nuclei: Local File Read via require() Module Loader Bypass
V. Comments for CVE-2026-42205
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