CVE-2026-56337

Medium

Description

Capgo before 12.128.2 contains an information disclosure vulnerability in the public.exist_app_v2 RPC function that allows unauthenticated attackers to enumerate app_ids by calling POST /rest/v1/rpc/exist_app_v2 with arbitrary appid parameters. Remote attackers can exploit this SECURITY DEFINER function to determine whether specific app_ids exist in the public.apps table, enabling cross-tenant app enumeration and privacy violations.

SeverityMedium

CVSS5.3

Exploit probability38. percentile0.4%

ProductCapgo

PublishedJun 24, 2026

First seenJun 24, 2026

Weakness typeCWE-200Sensitive information exposure

How to fix

Update

Capgo Capgo12.128.2 or later

Vendor advisories

github.com/Cap-go/capgo/security/advisories/GHSA-wjqr-gmx8-jj56

Affected products

Product	Affected versions	Fixed in
Capgo Capgo	v < 12.128.2	12.128.2

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