FastBee through 2.1.0 contains an insecure direct object reference vulnerability in ProductController that allows
Source GCVE Database
Not known to be exploited · CVSS 8.7 High.
Data as of 3 Nov 2026, 19:43 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 8.7 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 8.3 |
| CNA | CVSS 4.0 | 8.7 |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| beecueFastBee | Affected
| Fixed in– |
AI-suggested
Until a fix is available, restrict authenticated user permissions to prevent unauthorized access to other tenants' product IDs and monitor for suspicious activity related to product access and modification.
Description
FastBee versions through 2.1.0 have an insecure direct object reference (IDOR) vulnerability in the ProductController. Authenticated tenant users can exploit this flaw to access products belonging to other tenants by providing their product IDs. This allows attackers to enumerate sequential product IDs to read sensitive MQTT credentials, modify product configurations including tenant identifiers, or delete products along with related data.
References
- nvd.nist.gov/vuln/detail/CVE-2026-121556 (opens in a new tab)
- github.com/beecue/FastBee/issues/32 (opens in a new tab)
- github.com/beecue/FastBee/commit/3393e3223965a9dc9682dfb2bd37635fffa0fbd2 (opens in a new tab)
- github.com/kerwincui/FastBee (opens in a new tab)
- github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-open-api/src/main/java/com/fastbee/data/controller/ProductController.java (opens in a new tab)
- github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-service/fastbee-iot-service/src/main/java/com/fastbee/iot/service/impl/ProductServiceImpl.java (opens in a new tab)
- github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-service/fastbee-iot-service/src/main/resources/mapper/iot/ProductMapper.xml (opens in a new tab)
- vulncheck.com/advisories/fastbee-through-2.1.0-idor-via-iot-product-by-id-endpoints (opens in a new tab)