CVE-2026-56256 | Capgo before 12.128.2 enforces mandatory two-factor authenti… | CVSS 7.1 HIGH

Description

Capgo before 12.128.2 enforces mandatory two-factor authentication only at the UI level. Sensitive Organization (ORG) management API endpoints (e.g., editing organization details, inviting users) do not validate 2FA completion on the backend. An authenticated Admin user who has not enabled 2FA can replay or modify a previously captured ORG API request to perform privileged organization actions, bypassing the globally enforced 2FA requirement.

Metadata

CVE ID: CVE-2026-56256
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-19 21:56 UTC
Published: 2026-06-24 11:53 UTC
Last updated: 2026-06-24 13:49 UTC
Primary CWE: CWE-602
Client-Side Enforcement of Server-Side Security
Vendor / Product: Capgo / Capgo
Sources: cve.org · NVD

Severity & Metrics

7.1 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
Capgo	Capgo	—	0 < 12.128.2, 12.128.2

Weakness (CWE)

CWE	Source	Description
CWE-602	cna	Client-Side Enforcement of Server-Side Security

CVSS scores (2)

Score	Severity	Version	Source	Vector
7.1	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
7.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

References (2)

GitHub Security Advisory (GHSA-cww4-5xfp-jw98) https://github.com/Cap-go/capgo/security/advisories/GHSA-cww4-5xfp-jw98
VulnCheck Advisory: Capgo - Two-Factor Authentication Bypass via Organization Management API https://www.vulncheck.com/advisories/capgo-two-factor-authentication-bypass-via-organization-management-api