CVE-2026-56296
Cap-go - App Existence Oracle via Unauthenticated transfer_app RPC
CVSS Score
5.3
EPSS Score
0.2%
EPSS Percentile
15th
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.
| CWE | CWE-203 |
| Vendor | cap-go |
| Product | capgo |
| Published | Jul 11, 2026 |
| Last Updated | Jul 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
Cap-go / capgo
0 < 12.128.2
References
Credits
🔍 Judel777