EUVD-2026-38124
GHSA-gh9r-qcpc-q754
Severity by source
CVSS:4.0/AV:N/AC:L/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
Network-reachable but requires authenticated app.read_devices access (PR:L); no scope change, no confidentiality or integrity impact, availability impact limited to pagination disruption.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/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
Cap-go before 12.128.12 contains a broken cursor pagination vulnerability in the /private/devices endpoint on the Cloudflare/workerd path that allows authenticated attackers to cause duplicate-page loops and make later rows unreachable. Attackers with app.read_devices access can exploit non-advancing cursor filters to trigger infinite pagination loops, prevent dataset traversal, and cause repeated processing in device-management workflows.
AnalysisAI
Broken cursor pagination in Capgo's /private/devices endpoint on the Cloudflare/workerd runtime path allows authenticated attackers with app.read_devices permission to trigger infinite duplicate-page loops, making later dataset rows permanently unreachable for affected sessions. All Capgo versions before 12.128.12 are vulnerable, and the impact is operational: device-management workflows repeatedly process the same duplicate records while failing to advance through the full dataset. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires three concurrent conditions: (1) the attacker must hold a valid authenticated session with app.read_devices permission in the target Capgo instance - unauthenticated exploitation is not possible; (2) the Capgo instance must be deployed on the Cloudflare/workerd runtime - the vulnerability is path-specific and does not generalize to all Capgo hosting configurations; (3) the attacker must have network access to the /private/devices API endpoint. … 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:N/VI:N/VA:L/SC:N/SI:N/SA:N) correctly characterizes this as a network-reachable, low-complexity attack requiring low-privilege authentication with no user interaction, producing availability impact only on the vulnerable system. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated Capgo user holding app.read_devices permission sends a series of GET requests to /private/devices with a page cursor on a Cloudflare/workerd-hosted deployment; because the cursor does not advance, each response returns the first page of device records indefinitely. Automated device-management pipelines consuming this API will process the same device records in a loop, failing to reach records beyond the first page, which can cause missed configuration updates, duplicate event processing, or silent data gaps in downstream systems. … |
| Remediation | Upgrade Capgo to version 12.128.12 or later, which contains the vendor-released patch correcting the cursor advancement logic in the /private/devices pagination implementation. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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