CVE-2026-56309: 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. Attacke
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-56309
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-56309 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Capgo
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-56335: Capgo before 12.128.2 contains an authorization bypass vulnerability where write-scoped API ke…nvd · 2026-07-10
- mediumCVE-2026-56329: Capgo before 12.128.2 contains a cross-tenant preview namespace collision vulnerability caused…nvd · 2026-07-10
- mediumCVE-2026-56312: Capgo before 12.128.2 contains an improper validation vulnerability in the accept_invitation e…nvd · 2026-07-10
- highCVE-2026-56305: Capgo before 12.128.2 contains an authentication bypass vulnerability in the password change e…nvd · 2026-07-10
- highCVE-2026-56279: Capgo before 12.128.2 contains an information disclosure vulnerability in the get_orgs_v7(user…nvd · 2026-07-10
- mediumCVE-2026-56298: Capgo before 12.128.2 fails to strip EXIF metadata from images uploaded via the app informatio…nvd · 2026-07-08
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