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CVE-2026-56339— Capgo - Unauthenticated Organization Existence Enumeration via rescind_invitation RPC

Quick assessment

Affected
Cap-go capgo
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.

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Supabase PostgREST SECURITY DEFINER RPC函数public.rescind_invitation存在信息泄露问题，可能导致未经身份验证的攻击者枚举组织存在性，通过返回不同的错误消息（NO_ORG与NO_RIGHTS）发现有效的组织ID，增加针对性钓鱼攻击或社会工程攻击的攻击面。

CVSS 7.5 · High EPSS 0.46% · P37

Affected Version Matrix 2

VendorProduct Version RangeStatus
Cap-go capgo < 12.128.2 affected
12.128.2 unaffected
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I. Basic Information for CVE-2026-56339

Vulnerability Information
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Vulnerability Title
Capgo - Unauthenticated Organization Existence Enumeration via rescind_invitation RPC
Source: CVE Program / CVE List V5
Vulnerability Description
Capgo (Cap-go/capgo) before 12.128.2 contains an information disclosure vulnerability in the Supabase PostgREST SECURITY DEFINER RPC function public.rescind_invitation that allows unauthenticated attackers to enumerate organization existence. The function returns distinct error messages (NO_ORG vs NO_RIGHTS) when called with only a publishable API key, enabling attackers to discover valid organization IDs and increase the attack surface for targeted phishing or social engineering campaigns.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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Supabase PostgREST SECURITY DEFINER RPC函数public.rescind_invitation存在信息泄露问题，可能导致未经身份验证的攻击者枚举组织存在性，通过返回不同的错误消息（NO_ORG与NO_RIGHTS）发现有效的组织ID，增加针对性钓鱼攻击或社会工程攻击的攻击面。
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
Cap-go capgo 0 ~ 12.128.2 -

II. Public POCs for CVE-2026-56339

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Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
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Qwen3.6-35B-A3B · 11964 chars
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III. Intelligence Information for CVE-2026-56339

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Vendor Advisories for CVE-2026-56339 (2)

IV. Related Vulnerabilities

Same product: capgo
Same vendor: Cap-go
Same weakness: CWE-203

V. Comments for CVE-2026-56339

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