CVE-2026-56325Public exploitNetwork attack vector

Preview interruption via wildcard app ID lookup

Published Jun 20, 2026 · Updated Jun 20, 2026

Improper input validation in Capgo before 12.128.2 allows remote authenticated users to interrupt app previews via crafted app IDs. The preview.ts resolver passes an underscore-bearing appId to PostgREST ilike() and then single(), so the SQL wildcard can match multiple rows and return app_not_found. Exploitation requires permission to create a colliding app ID and an underscore-bearing target with preview enabled; the demonstrated consequence is preview unavailability.

CVSS severity2.3
Low
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper input validation in Capgo before 12.128.2 allows remote authenticated users to interrupt app previews via crafted app IDs. The preview.ts resolver passes an underscore-bearing appId to PostgREST ilike() and then single(), so the SQL wildcard can match multiple rows and return app_not_found. Exploitation requires permission to create a colliding app ID and an underscore-bearing target with preview enabled; the demonstrated consequence is preview unavailability.

The record

CVE
CVE-2026-56325
Published
Jun 20, 2026
Updated
Jun 20, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-20, T1499
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

5.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
2.3VulnCheckCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.1VulnCheckCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

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-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo