CVE-2026-56336 | Capgo before 12.128.2 contains an information disclosure vul… | CVSS 5.3 MEDIUM

Description

Capgo before 12.128.2 contains an information disclosure vulnerability in the unauthenticated /private/sso/check-domain endpoint that returns internal org_id and provider_id values. Attackers can enumerate email domains to build mappings of domains to organization UUIDs and SSO provider identifiers, enabling reconnaissance against Capgo tenants.

Metadata

CVE ID: CVE-2026-56336
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-20 13:13 UTC
Published: 2026-07-12 12:06 UTC
Last updated: 2026-07-12 12:06 UTC
Primary CWE: CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
Vendor / Product: Capgo / Capgo
Sources: cve.org · NVD

Severity & Metrics

5.3 MEDIUM CVSS 3.1

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

Affected products (1)

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

Weakness (CWE)

CWE	Source	Description
CWE-200	cna	Exposure of Sensitive Information to an Unauthorized Actor

CVSS scores (2)

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

References (2)

GitHub Security Advisory (GHSA-c5jf-5wxg-mgrq) https://github.com/Cap-go/capgo/security/advisories/GHSA-c5jf-5wxg-mgrq
VulnCheck Advisory: Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint https://www.vulncheck.com/advisories/capgo-information-disclosure-via-unauthenticated-sso-check-domain-endpoint