CVE-2026-56303Public exploitNetwork attack vector

Unauthenticated API key metadata disclosure via exposed RPC

Published Jul 11, 2026 · Updated Jul 11, 2026

Information disclosure in Capgo before 12.128.2 allows remote attackers to retrieve API key metadata through an exposed RPC. The SECURITY DEFINER function public.find_apikey_by_value selects and returns a full public.apikeys row while granting execution to the anon role. Exploitation requires a valid key value and reveals its owner, privilege mode, organization and app scope, hash status, and expiration data without altering records.

CVSS severity8.7
High
EPSS probability0.46%
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 retrieve API key metadata through an exposed RPC. The SECURITY DEFINER function public.find_apikey_by_value selects and returns a full public.apikeys row while granting execution to the anon role. Exploitation requires a valid key value and reveals its owner, privilege mode, organization and app scope, hash status, and expiration data without altering records.

The record

CVE
CVE-2026-56303
Published
Jul 11, 2026
Updated
Jul 11, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-732, CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 11, 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

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

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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