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CVE-2026-18266— Dify AI Workflow oauth_redirect_url Open Redirect Vulnerability

Quick assessment

Affected
LangGenius Dify
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.

LangGenius dify是LangGenius公司开源的一个开源的 LLM 应用程序开发平台。 LangGenius Dify 1.11.4版本存在输入验证错误漏洞，该漏洞源于OAuth流程处理中的开放重定向问题，可能导致远程攻击者重定向到恶意站点，从而泄露敏感信息。

AI Predicted 5.4 Difficulty: Easy EPSS 0.29% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
LangGenius Dify 1.11.4 affected
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I. Basic Information for CVE-2026-18266

Vulnerability Information
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Vulnerability Title
Dify AI Workflow oauth_redirect_url Open Redirect Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Dify AI Workflow oauth_redirect_url Open Redirect Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Dify. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the OAuth flow handling in the AppInitializer component. An attacker can force a redirection to a site that serves malicious content. An attacker can leverage this vulnerability to disclose information in the context of the application. Was ZDI-CAN-29196.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
LangGenius Dify 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LangGenius dify是LangGenius公司开源的一个开源的 LLM 应用程序开发平台。 LangGenius Dify 1.11.4版本存在输入验证错误漏洞，该漏洞源于OAuth流程处理中的开放重定向问题，可能导致远程攻击者重定向到恶意站点，从而泄露敏感信息。
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
LangGenius Dify 1.11.4 -

II. Public POCs for CVE-2026-18266

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III. Intelligence Information for CVE-2026-18266

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Vendor Advisories for CVE-2026-18266 (1)

IV. Related Vulnerabilities

Same product: Dify
Same vendor: LangGenius
Same weakness: CWE-601

V. Comments for CVE-2026-18266

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