CVE-2026-56337Public exploitNetwork attack vector

App ID enumeration via anonymous SECURITY DEFINER RPC

Published Jun 24, 2026 · Updated Jun 24, 2026

Information disclosure in Capgo before 12.128.2 allows remote attackers to enumerate registered app IDs through a public RPC endpoint. The public.exist_app_v2 SECURITY DEFINER function is granted to the anonymous role and returns a boolean after querying public.apps. No account is required; possession of the public Supabase key permits cross-tenant existence checks but does not expose table contents.

CVSS severity6.9
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Capgo before 12.128.2 allows remote attackers to enumerate registered app IDs through a public RPC endpoint. The public.exist_app_v2 SECURITY DEFINER function is granted to the anonymous role and returns a boolean after querying public.apps. No account is required; possession of the public Supabase key permits cross-tenant existence checks but does not expose table contents.

The record

CVE
CVE-2026-56337
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <12.128.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Capgo · Capgoversion=0 <12.128.2

Published CVSS scores

5.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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