CVE-2026-110108: MateCloud through 5.0.8 Missing Authorization via /api/v1/admin/storage API

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-13 · updated 2026-10-16
Weakness: CWE-862

Description

MateCloud through 5.0.8 contains a missing authorization vulnerability that allows any authenticated user to manage object storage by calling the unprotected /api/v1/admin/storage endpoints in StorageController. Low-privilege or self-registered users can supply arbitrary bucket and objectName values to list objects, obtain pre-signed download URLs for other users' files, delete objects, and upload at chosen keys.

Affected products

mateaix MateCloud: through 5.0.8

References

https://github.com/mateaix/matecloud
https://github.com/mateaix/matecloud/blob/57b1edc0f0b8b964448e2d41ef7ba98751e71d8d/mate-biz/mate-system/src/main/java/vip/mate/system/admin/trigger/controller/StorageController.java#L45-L118
https://github.com/mateaix/matecloud/blob/57b1edc0f0b8b964448e2d41ef7ba98751e71d8d/mate-gateway/src/main/resources/application.yml#L80-L85
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/matecloud-storage-admin-missing-authz
https://www.vulncheck.com/advisories/matecloud-through-5.0.8-missing-authorization-via-api-v1-admin-storage-api

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