CVE-2026-56296— Cap-go - App Existence Oracle via Unauthenticated transfer_app RPC
Quick assessment
Affected
Cap-go capgo
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.
Capgo是CAPGO公司的一个专为CapacitorJS开发者打造的移动应用开发和更新平台。 Capgo 12.128.2之前版本存在侧信道信息泄露漏洞，该漏洞源于public.transfer_app RPC函数针对存在和不存在的应用ID返回不同的错误消息，可能导致未经身份验证的攻击者通过仅使用可发布API密钥调用transfer_app时观察错误消息差异来枚举有效的应用ID。
Possible ATT&CK Techniques 1 AI
T1592.001 · Hardware
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I. Basic Information for CVE-2026-56296
Vulnerability Information
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Vulnerability Title
Cap-go - App Existence Oracle via Unauthenticated transfer_app RPC
Source: CVE Program / CVE List V5
Vulnerability Description
Cap-go before 12.128.2 contains an information disclosure vulnerability in the public.transfer_app RPC function that returns distinct error messages for existing versus non-existing app IDs. Unauthenticated attackers can enumerate valid app IDs by observing error message differences when calling transfer_app with only the publishable API key.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Capgo 侧信道信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Capgo是CAPGO公司的一个专为CapacitorJS开发者打造的移动应用开发和更新平台。 Capgo 12.128.2之前版本存在侧信道信息泄露漏洞，该漏洞源于public.transfer_app RPC函数针对存在和不存在的应用ID返回不同的错误消息，可能导致未经身份验证的攻击者通过仅使用可发布API密钥调用transfer_app时观察错误消息差异来枚举有效的应用ID。
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-2026-56296
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-56296 (2)
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V. Comments for CVE-2026-56296
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