CVE-2026-56300

Received Received - Intake

BaseFortify

Publication date: 2026-06-30

Last updated on: 2026-06-30

Assigner: VulnCheck

Description

Capgo before 12.128.2 contains unauthenticated security definer RPC functions get_user_id and get_org_perm_for_apikey that expose API key validity oracles and user UUID disclosure. Unauthenticated attackers using the public API key can validate leaked keys, enumerate users and apps, and determine permission levels, significantly increasing the actionability of compromised credentials.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-30

Last Modified

2026-06-30

Generated

2026-07-01

AI Q&A

2026-07-01

EPSS Evaluated

N/A

NVD

CVE-2026-56300

EUVD

EUVD-2026-40435

Affected Vendors & Products

Vendor	Product	Version / Range
capgo	capgo	to 12.128.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability exists in Capgo versions before 12.128.2 and involves unauthenticated security definer RPC functions named get_user_id and get_org_perm_for_apikey.

These functions expose API key validity oracles and user UUID disclosure, allowing unauthenticated attackers to use the public API key to validate leaked API keys, enumerate users and applications, and determine permission levels.

This significantly increases the usefulness of compromised credentials for attackers.

Impact Analysis

The vulnerability allows unauthenticated attackers to validate leaked API keys, enumerate users and applications, and determine permission levels without any authentication.

This means attackers can confirm which API keys are valid and understand the scope of access those keys provide, increasing the risk of unauthorized access and misuse of your system.

As a result, compromised credentials become more actionable, potentially leading to data exposure or unauthorized operations.

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