CVE-2026-56323Public exploitNetwork attack vector

Unauthenticated tenant metadata disclosure via channel_self

Published Jun 22, 2026 · Updated Jun 22, 2026

Information disclosure in Capgo before 12.128.2 allows remote attackers to enumerate private channels and tenant state via channel_self. The unauthenticated GET handler omits checkPermission(), accepts app_id without device_id or signature validation, and returns listCompatibleChannels() metadata plus distinct app and plan errors. No account, API key, or device binding is required; exposed data is limited to channel metadata, valid application identifiers, and subscription status.

CVSS severity8.7
High
EPSS probability0.64%
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 enumerate private channels and tenant state via channel_self. The unauthenticated GET handler omits checkPermission(), accepts app_id without device_id or signature validation, and returns listCompatibleChannels() metadata plus distinct app and plan errors. No account, API key, or device binding is required; exposed data is limited to channel metadata, valid application identifiers, and subscription status.

The record

CVE
CVE-2026-56323
Published
Jun 22, 2026
Updated
Jun 22, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-200, T1595.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 22, 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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1595.003Active Scanning: Wordlist Scanning

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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