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Vulnerability Details :

CVE-2026-56328

Summary
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At-30 Jun, 2026 | 22:08
Updated At-01 Jul, 2026 | 14:28
Rejected At-
Credits

Capgo - Integrity Issue in Release Routing via Multiple Public Channels

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update state and silently influence which bundle unnamed clients receive, breaking release routing integrity and predictability.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulnCheck
Assigner Org ID:83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At:30 Jun, 2026 | 22:08
Updated At:01 Jul, 2026 | 14:28
Rejected At:
▼CVE Numbering Authority (CNA)
Capgo - Integrity Issue in Release Routing via Multiple Public Channels

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update state and silently influence which bundle unnamed clients receive, breaking release routing integrity and predictability.

Affected Products
Vendor
Capgo
Product
Capgo
Default Status
unaffected
Versions
Affected
  • From 0 before 12.128.2 (semver)
Unaffected
  • 12.128.2 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-670Always-Incorrect Control Flow Implementation
Type: CWE
CWE ID: CWE-670
Description: Always-Incorrect Control Flow Implementation
Metrics
VersionBase scoreBase severityVector
4.07.1HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Version: 4.0
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

reporter
Judel777
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464
vendor-advisory
https://www.vulncheck.com/advisories/capgo-integrity-issue-in-release-routing-via-multiple-public-channels
third-party-advisory
Hyperlink: https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464
Resource:
vendor-advisory
Hyperlink: https://www.vulncheck.com/advisories/capgo-integrity-issue-in-release-routing-via-multiple-public-channels
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464
exploit
Hyperlink: https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:disclosure@vulncheck.com
Published At:30 Jun, 2026 | 23:17
Updated At:01 Jul, 2026 | 16:16

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update state and silently influence which bundle unnamed clients receive, breaking release routing integrity and predictability.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.1HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
N/A
Type: Secondary
Version: 4.0
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-670Secondarydisclosure@vulncheck.com
CWE ID: CWE-670
Type: Secondary
Source: disclosure@vulncheck.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464disclosure@vulncheck.com
N/A
https://www.vulncheck.com/advisories/capgo-integrity-issue-in-release-routing-via-multiple-public-channelsdisclosure@vulncheck.com
N/A
https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464134c704f-9b21-4f2e-91b3-4a467353bcc0
N/A
Hyperlink: https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://www.vulncheck.com/advisories/capgo-integrity-issue-in-release-routing-via-multiple-public-channels
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource: N/A

Change History

0
Information is not available yet

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Details not found