CVE-2026-56252Public exploitNetwork attack vector

Cross-scope webhook delivery via omitted app restriction

Published Jul 12, 2026 · Updated Jul 12, 2026

Incorrect authorization in Capgo before 12.128.2 allows remote authenticated users to trigger org-scoped webhook deliveries with app-scoped keys. The POST /webhooks/test path calls checkWebhookPermissionV2, whose apikeyHasOrgRight check accepts an empty limited_to_orgs list without enforcing limited_to_apps. An app-scoped key owned by an organization administrator can therefore send signed webhook traffic and obtain delivery metadata for organization webhooks outside its app boundary.

CVSS severity5.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Capgo before 12.128.2 allows remote authenticated users to trigger org-scoped webhook deliveries with app-scoped keys. The POST /webhooks/test path calls checkWebhookPermissionV2, whose apikeyHasOrgRight check accepts an empty limited_to_orgs list without enforcing limited_to_apps. An app-scoped key owned by an organization administrator can therefore send signed webhook traffic and obtain delivery metadata for organization webhooks outside its app boundary.

The record

CVE
CVE-2026-56252
Published
Jul 12, 2026
Updated
Jul 12, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 12, 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:L/VA:N/SC:N/SI:N/SA:N
5.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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.

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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-863Incorrect Authorization

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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