EUVD-2026-38113
GHSA-pw45-xmrx-x2w8
Severity by source
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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
Exploitation requires authenticated app registration and precise wildcard app_id construction (PR:L, AC:H); impact is limited to preview availability disruption with no confidentiality or integrity effect.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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
Lifecycle Timeline
2DescriptionCVE.org
Capgo before 12.128.2 uses ILIKE pattern matching instead of exact matching for app_id lookup in the preview subdomain resolver, allowing underscore characters in app_id to act as SQL wildcards. Attackers can create apps with app_ids differing by one character at underscore positions to cause unintended pattern matches, breaking preview functionality for legitimate apps or causing app-id confusion.
AnalysisAI
Preview subdomain resolution in Capgo before 12.128.2 is susceptible to app-id confusion because the resolver uses PostgreSQL's ILIKE operator - which treats underscores as single-character wildcards - instead of exact equality matching for app_id lookups. An authenticated attacker who can register a Capgo application can craft an app_id with strategically placed underscores that collide with a victim application's identifier, hijacking preview subdomain resolution and breaking preview functionality for the targeted app. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid, authenticated Capgo account with the ability to register new applications (CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 2.3 (AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N) accurately represents a low-severity, narrowly scoped vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated Capgo user registers an application with an app_id such as 'orgXmyappXprod' where X represents any single character, which under ILIKE matching acts as a wildcard that resolves to the victim app 'org_myapp_prod' (using literal underscores). When the victim's preview subdomain request is processed, the resolver incorrectly matches the attacker's app instead of the legitimate one, disrupting preview routing for the target application. … |
| Remediation | The primary fix is upgrading to Capgo version 12.128.2 or later, which addresses the root cause by replacing ILIKE with exact equality matching for app_id lookups in the preview subdomain resolver. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-20 – Improper Input Validation
View allSame technique Information Disclosure
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External POC / Exploit Code
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