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CVE-2026-121556VulnerabilityPublished

FastBee through 2.1.0 contains an insecure direct object reference vulnerability in ProductController that allows

Source GCVE Database

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Authoritative record:CVE-2026-121556· High 8.7

Not known to be exploited · CVSS 8.7 High.

Data as of 3 Nov 2026, 19:43 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.08.7
CNA (VulnCheck)CVSS 3.18.3
CNACVSS 4.08.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
beecueFastBeeAffected
  • <=2.1.0
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

Community reviews

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