CVE-2026-56309
Capgo - Plan Bypass via Unrestricted Attachment Upload Endpoint
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
Capgo before 12.128.2 fails to enforce plan/quota restrictions on the /files/upload/attachments endpoint, allowing plan-blocked apps to create publicly readable R2 objects. Attackers can upload arbitrary attachments using upload-scoped API keys that bypass plan checks, persist outside normal bundle metadata, and survive app deletion, enabling storage and bandwidth abuse.
| CWE | CWE-770 |
| Vendor | capgo |
| Product | capgo |
| Published | Jul 10, 2026 |
| Last Updated | Jul 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
Capgo / Capgo
0 < 12.128.2
References
Credits
🔍 Judel777