CVE-2026-56319Public exploitNetwork attack vector

App-ID enumeration via differential error responses

Published Jun 20, 2026 · Updated Jun 20, 2026

Information disclosure in Capgo before 12.128.2 allows remote authenticated users to enumerate sibling app IDs through its statistics API. The GET /statistics/app/:app_id route authorizes a scoped API key through the broader owner-user principal, then converts a failed sibling-app row lookup into a 500 PGRST116 response while nonexistent IDs fail earlier with 401. An app-limited read key is required; the oracle reveals only whether candidate sibling app IDs exist, enabling follow-on targeting without directly exposing app contents.

CVSS severity5.3
Medium
EPSS probability0.31%
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 authenticated users to enumerate sibling app IDs through its statistics API. The GET /statistics/app/:app_id route authorizes a scoped API key through the broader owner-user principal, then converts a failed sibling-app row lookup into a 500 PGRST116 response while nonexistent IDs fail earlier with 401. An app-limited read key is required; the oracle reveals only whether candidate sibling app IDs exist, enabling follow-on targeting without directly exposing app contents.

The record

CVE
CVE-2026-56319
Published
Jun 20, 2026
Updated
Jun 20, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 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 privilegesauthenticated

What is affected?

Capgo · Capgoversion=0 <12.128.2

Published CVSS scores

5.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.3VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-203Observable Discrepancy

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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