CVE-2026-56296
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cap-go | capgo | 0 < 12.128.2 | affected |
| Cap-go | capgo | 12.128.2 | unaffected |
Weaknesses
- CWE-203: Observable Discrepancy
References
- https://github.com/Cap-go/capgo/security/advisories/GHSA-fmm3-3qcg-85j6
- https://www.vulncheck.com/advisories/cap-go-app-existence-oracle-via-unauthenticated-transfer-app-rpc
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