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CVE-2026-73084— Activepieces: Reflected Cross-Site Scripting in OAuth Redirect Endpoint

Quick assessment

Affected
activepieces activepieces
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.

Activepieces是Activepieces组织的一个可视化工作流自动化平台。 Activepieces 0.83.0之前版本存在安全漏洞，该漏洞源于/api/redirect OAuth回调端点将用户提供的code查询参数直接嵌入内联脚本块且未正确转义，可能导致未经身份验证的攻击者访问受害者的会话令牌或代表受害者发起经过身份验证的API调用。

CVSS 6.1 · Medium EPSS 0.23% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
activepieces activepieces < 0.83.0 affected
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I. Basic Information for CVE-2026-73084

Vulnerability Information
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Vulnerability Title
Activepieces: Reflected Cross-Site Scripting in OAuth Redirect Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Activepieces is an open source AI workflow automation platform. Prior to 0.83.0, the /api/redirect OAuth callback endpoint embeds the user-supplied code query parameter directly into an inline script block without proper escaping. A crafted request to /api/redirect with a malicious code value can break out of the script context and execute arbitrary JavaScript in the Activepieces origin when a logged-in user opens it. An unauthenticated attacker can access the victim's session tokens or make authenticated API calls on the victim's behalf. This issue is fixed in version 0.83.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Activepieces 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Activepieces是Activepieces组织的一个可视化工作流自动化平台。 Activepieces 0.83.0之前版本存在安全漏洞，该漏洞源于/api/redirect OAuth回调端点将用户提供的code查询参数直接嵌入内联脚本块且未正确转义，可能导致未经身份验证的攻击者访问受害者的会话令牌或代表受害者发起经过身份验证的API调用。
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
activepieces activepieces < 0.83.0 -

II. Public POCs for CVE-2026-73084

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III. Intelligence Information for CVE-2026-73084

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Patches & Fixes for CVE-2026-73084 (1)

Vendor Advisories for CVE-2026-73084 (1)

Other References for CVE-2026-73084 (1)

Same Patch Batch · activepieces · 2026-08-11 · 4 CVEs total

CVE-2026-73081 8.7 HIGH Activepieces: Remote Code Execution via Command Injection in Code Step Name
CVE-2026-73083 7.6 HIGH Activepieces: V8 Isolate Sandbox Bypass via importFresh Module Loading
CVE-2026-73082 5.3 MEDIUM Activepieces: Server-side request forgery in MCP tool validation endpoint

IV. Related Vulnerabilities

Same product: activepieces
Same vendor: activepieces
Same weakness: CWE-79

V. Comments for CVE-2026-73084

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