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CVE-2024-24771— Open Forms potential multi-factor authentication bypass

Quick assessment

Affected
open-formulieren open-forms
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Open Forms是Open Formulieren开源的一种智能动态表格。用于快速创建通过 API 公开的强大而智能的表单。 Open Forms 2.2.8之前版本, 2.3.6版本, 2.4.4版本, 2.5.1版本存在安全漏洞，该漏洞源于存在身份验证绕过漏洞。

CVSS 7.7 · High EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2024-24771

Vulnerability Information
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Vulnerability Title
Open Forms potential multi-factor authentication bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Open Forms allows users create and publish smart forms. Versions prior to 2.2.9, 2.3.7, 2.4.5, and 2.5.2 contain a non-exploitable multi-factor authentication weakness. Superusers who have their credentials (username + password) compromised could potentially have the second-factor authentication bypassed if an attacker somehow managed to authenticate to Open Forms. The maintainers of Open Forms do not believe it is or has been possible to perform this login. However, if this were possible, the victim's account may be abused to view (potentially sensitive) submission data or have been used to impersonate other staff accounts to view and/or modify data. Three mitigating factors to help prevent exploitation include: the usual login page (at `/admin/login/`) does not fully log in the user until the second factor was succesfully provided; the additional non-MFA protected login page at `/api/v2/api-authlogin/` was misconfigured and could not be used to log in; and there are no additional ways to log in. This also requires credentials of a superuser to be compromised to be exploitable. Versions 2.2.9, 2.3.7, 2.4.5, and 2.5.2 contain the following patches to address these weaknesses: Move and only enable the API auth endpoints (`/api/v2/api-auth/login/`) with `settings.DEBUG = True`. `settings.DEBUG = True` is insecure and should never be applied in production settings. Additionally, apply a custom permission check to the hijack flow to only allow second-factor-verified superusers to perform user hijacking.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Open Forms 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open Forms是Open Formulieren开源的一种智能动态表格。用于快速创建通过 API 公开的强大而智能的表单。 Open Forms 2.2.8之前版本, 2.3.6版本, 2.4.4版本, 2.5.1版本存在安全漏洞，该漏洞源于存在身份验证绕过漏洞。
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
open-formulieren open-forms < 2.2.9 -

II. Public POCs for CVE-2024-24771

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 8771 chars
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III. Intelligence Information for CVE-2024-24771

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Vendor Advisories for CVE-2024-24771 (1)

Other References for CVE-2024-24771 (4)

IV. Related Vulnerabilities

Same product: open-forms
Same vendor: open-formulieren
Same weakness: CWE-284

V. Comments for CVE-2024-24771

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