CVE-2026-56310Public exploitNetwork attack vector

Cross-organization member disclosure via missing scope check

Published Jun 24, 2026 · Updated Jun 24, 2026

Improper authorization in Capgo before 12.128.2 allows remote authenticated users to read out-of-scope organization member data. The GET /organization/members handler calls checkPermission for org.read_members but omits enforcement of the API key's limited_to_orgs scope before querying member records. A valid org-limited API key and an organization accessible to the key owner are required, exposing user IDs, email addresses, profile image URLs, roles, and temporary-account status across tenant boundaries.

CVSS severity5.3
Medium
EPSS probability0.30%
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 read out-of-scope organization member data. The GET /organization/members handler calls checkPermission for org.read_members but omits enforcement of the API key's limited_to_orgs scope before querying member records. A valid org-limited API key and an organization accessible to the key owner are required, exposing user IDs, email addresses, profile image URLs, roles, and temporary-account status across tenant boundaries.

The record

CVE
CVE-2026-56310
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-285, T1190
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

Capgo · Capgoversion=0 <12.128.2

Published CVSS scores

5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.3VulnCheckCVSS: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-285Improper Authorization
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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