CVE-2026-56247: Capgo - Privilege Escalation via Cross-Scope RBAC Role Assignment

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-30 · updated 2026-07-01
Weakness: CWE-266

Description

Capgo before 12.128.2 allows org admins to assign org-scoped RBAC roles at app scope without validating role scope compatibility, including to pending invitees. Attackers can pre-seed malformed high-privilege bindings that survive invite acceptance, enabling accepted low-privilege users to perform unauthorized privileged app actions.

Affected products

Capgo: before 12.128.2 — fixed in 12.128.2

How to fix

Upgrade to a fixed version: Capgo 12.128.2. Check the vendor advisory for mitigations.

References

https://github.com/Cap-go/capgo/security/advisories/GHSA-55q2-p3m2-x66x
https://www.vulncheck.com/advisories/capgo-privilege-escalation-via-cross-scope-rbac-role-assignment
https://github.com/Cap-go/capgo/security/advisories/GHSA-55q2-p3m2-x66x

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