CVE-2026-56216Public exploitNetwork attack vector

Org-wide scope escalation via omitted app-limit check

Published Jun 20, 2026 · Updated Jun 20, 2026

Improper authorization in Capgo before 12.128.2 allows remote authenticated users to mint unrestricted API keys through the apikey endpoint. The POST handler in supabase/functions/_backend/public/apikey/post.ts rejects API-key callers limited to organizations but omits the equivalent limited_to_apps check, so empty limits create an unrestricted key. A compromised app-limited key is required; the resulting key can read org-wide app listings and reach other endpoints available to mode-all keys.

CVSS severity8.7
High
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

Improper authorization in Capgo before 12.128.2 allows remote authenticated users to mint unrestricted API keys through the apikey endpoint. The POST handler in supabase/functions/_backend/public/apikey/post.ts rejects API-key callers limited to organizations but omits the equivalent limited_to_apps check, so empty limits create an unrestricted key. A compromised app-limited key is required; the resulting key can read org-wide app listings and reach other endpoints available to mode-all keys.

The record

CVE
CVE-2026-56216
Published
Jun 20, 2026
Updated
Jun 20, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-269, CWE-285, CWE-863, T1098.001
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

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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 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-269Improper Privilege Management
CWE-285Improper Authorization
CWE-863Incorrect Authorization
T1098.001Additional Cloud Credentials

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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