PT-2026-54023 · Cap Go · Cap-Go

Judel777 · Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-56230

NVD

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Capgo before 12.128.2 contains a broken object level authorization vulnerability in middlewareKey() that accepts the client-controlled x-limited-key-id header without validating ownership, allowing authenticated users to adopt cross-tenant limited keys. Attackers can supply another tenant's limited key ID to bypass authorization checks and access unauthorized cross-tenant resources across multiple API endpoints.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-56230

Affected Products

Cap-Go

References · 3

• https://github.com/Cap-go/capgo/security/advisories/GHSA-cppm-733w-hg86 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56230 · Security Note
• https://vulncheck.com/advisories/capgo-broken-object-level-authorization-via-x-limited-key-id-header · Note