EUVD-2026-38428
GHSA-44jx-wxxg-x6pv
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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
Network-reachable API exploitable with any valid app-scoped key (PR:L, AC:L, UI:N); sibling key disclosure and tampering give C:H/I:H, with deletion causing partial A:L.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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 contains an authorization bypass vulnerability in its public API key management handlers (get/put/delete/post). API keys created with mode=all but restricted to a single app via limited_to_apps are only checked for limited_to_orgs and not for limited_to_apps, so an app-scoped key can enumerate, update, and delete sibling API keys belonging to the same account that are outside its declared app scope, enabling tampering with account-level credentials.
AnalysisAI
Authorization bypass in Capgo before 12.128.2 lets authenticated holders of an app-scoped public API key enumerate, modify, or delete other API keys on the same account that belong to different applications. The flaw stems from missing limited_to_apps enforcement in the get/put/delete/post key-management handlers, which only validate the limited_to_orgs scope. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a valid Capgo public API key created with mode=all and constrained via limited_to_apps to at least one application on a multi-app account; the attacker must invoke the API key management endpoints (get/put/delete/post handlers) over the network. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L) is internally consistent with the description: exploitation is remote, low-complexity, requires only a low-privilege scoped API key, and yields high confidentiality and integrity impact on sibling credentials with limited availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A third-party developer or CI pipeline is issued a Capgo API key with mode=all but limited_to_apps set to a single non-production application. Using that key against the public API key-management endpoints, the holder lists sibling API keys belonging to the same account's production app, then rotates or deletes them - locking out the legitimate owner or substituting attacker-controlled credentials for subsequent OTA update operations. |
| Remediation | Vendor-released patch: upgrade Capgo to 12.128.2 or later, per GHSA-hwc7-j2p6-43xp (https://github.com/Cap-go/capgo/security/advisories/GHSA-hwc7-j2p6-43xp). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit CloudApp API key usage logs for get/put/delete/post operations targeting keys outside the requesting application's scope; disable any unused or legacy app-scoped API keys. …
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
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External POC / Exploit Code
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