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CVE-2026-56329— Capgo - Cross-Tenant Preview Namespace Collision via Non-Bijective Underscore Decoding

Quick assessment

Affected
Capgo 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之前版本存在处理逻辑错误漏洞，该漏洞源于预览主机名解析中双下划线到点的非双射解码导致跨租户预览命名空间冲突，攻击者可注册带下划线的App ID与其他租户的点分隔App ID发生冲突，导致预览路由错误和拒绝服务。

CVSS 6.4 · Medium EPSS 0.33% · P23

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
Capgo Capgo < 12.128.2 affected
12.128.2 unaffected
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I. Basic Information for CVE-2026-56329

Vulnerability Information
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Vulnerability Title
Capgo - Cross-Tenant Preview Namespace Collision via Non-Bijective Underscore Decoding
Source: CVE Program / CVE List V5
Vulnerability Description
Capgo before 12.128.2 contains a cross-tenant preview namespace collision vulnerability caused by non-bijective decoding of double underscores to dots in preview hostname parsing. Attackers can register app IDs with underscores that collide with other tenants' dotted app IDs, causing preview misrouting and denial of preview access for victim applications.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
解释冲突
Source: CVE Program / CVE List V5
Vulnerability Title
Capgo 处理逻辑错误漏洞
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之前版本存在处理逻辑错误漏洞，该漏洞源于预览主机名解析中双下划线到点的非双射解码导致跨租户预览命名空间冲突，攻击者可注册带下划线的App ID与其他租户的点分隔App ID发生冲突，导致预览路由错误和拒绝服务。
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
Capgo Capgo 0 ~ 12.128.2 -

II. Public POCs for CVE-2026-56329

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III. Intelligence Information for CVE-2026-56329

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Vendor Advisories for CVE-2026-56329 (2)

Same Patch Batch · Capgo · 2026-07-10 · 6 CVEs total

CVE-2026-56305 8.3 HIGH Capgo - Authentication Bypass in Password Change via Missing Current Password Validation
CVE-2026-56279 7.5 HIGH Capgo - Information Disclosure via get_orgs_v7 RPC Endpoint
CVE-2026-56312 6.5 MEDIUM Capgo - Account Creation Before CAPTCHA Validation in accept_invitation Endpoint
CVE-2026-56335 6.5 MEDIUM Capgo - Channel Configuration Mutation via Write-Scoped API Keys
CVE-2026-56309 5.4 MEDIUM Capgo - Plan Bypass via Unrestricted Attachment Upload Endpoint

IV. Related Vulnerabilities

Same product: Capgo
Same vendor: Capgo
Same weakness: CWE-436

V. Comments for CVE-2026-56329

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