Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint (CVE-2026-56336) | HOL Guard CVE

Medium · CVSS 5.3CVE-2026-56336

Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint

Answer in brief

CVE-2026-56336 records a Medium severity (CVSS 5.3) vulnerability in Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint. The current sources do not mark it as known exploited. The current feed maps Capgo/Capgo (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 12, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Jul 12, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Capgo/Capgo (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Capgo/Capgogeneric	>=0 <12.128.2	12.128.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for Capgo/Capgo.
Review the reported fix. Update Capgo/Capgo to 12.128.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jul 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 12, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.