NVD security advisoryHigh
High advisory for FastBee
CVE-2026-121556 · Reported 3 Nov 2026
Full advisory details, affected packages, severity context, and original source.
Affected technology
FastBeeAffected product
Advisory overview
FastBee through 2.1.0 contains an insecure direct object reference vulnerability in ProductController that allows authenticated tenant users to access other tenants' products by supplying their product IDs. Attackers can enumerate sequential product IDs to read MQTT account, password, and secret values, overwrite product configuration including tenant_id, or delete products with cascading rows.
Related references
- https://github.com/beecue/FastBee/commit/3393e3223965a9dc9682dfb2bd37635fffa0fbd2
- https://github.com/beecue/FastBee/issues/32
- https://github.com/kerwincui/FastBee
- https://github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-open-api/src/main/java/com/fastbee/data/controller/ProductController.java#L77-L141
- https://github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-service/fastbee-iot-service/src/main/java/com/fastbee/iot/service/impl/ProductServiceImpl.java#L72-L92
- https://github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-service/fastbee-iot-service/src/main/resources/mapper/iot/ProductMapper.xml#L37-L67
- https://www.vulncheck.com/advisories/fastbee-through-2.1.0-idor-via-iot-product-by-id-endpoints