Prototype pollution in ThingsBoard
Priority MEDIUM 40CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
ThingsBoard contains a prototype pollution vulnerability which may lead to arbitrary code execution within a sandboxed context by a user who can log in to the affected product with the tenant administrator privilege (TENANT_ADMIN).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00603 49th percentileScored 2026-11-07
Fix Fixed ThingsBoard (ThingsBoard): v4.3.1.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ThingsBoard | ThingsBoard | before v4.3.1.2 | v4.3.1.2 | Patch available | CNA |
- ThingsBoard VendorThingsBoard Affected before v4.3.1.2 Fixed in v4.3.1.2 Patch available CNA
Remediation
- Fix · CNA ThingsBoard (ThingsBoard) Fixed in v4.3.1.2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-53676
- 2026-10-03 Alias added: GHSA-prc2-x3qx-38m9
- 2026-10-25 EPSS moved to the below the 50th percentile
References
More ThingsBoard vulnerabilities
- TI-2023-24282 ThingsBoard before 3.5 allows Server-Side Template Injection if users are allowed to… CVSS 3.1HIGH 8.8
- TI-2022-18942 Cross Site Scripting (XSS) vulnerability in Things Board 3.4.1 allows remote attackers to… CVSS 3.1CRITICAL 9.6
- TI-2022-23955 ThingsBoard 3.4.1 could allow a remote authenticated attacker to achieve Vertical… CVSS 3.1HIGH 8.8
- TI-2022-22507 An issue was discovered in ThingsBoard 3.4.1, allows low privileged attackers… CVSS 3.1HIGH 8.8
- TI-2020-16789 ThingsBoard before v3.2 is vulnerable to Host header injection in password-reset emails. CVSS 3.1HIGH 8.8
- TI-2025-24420 ThingsBoard < v4.2.1 SVG Image SSRF CVSS 4.0MEDIUM 6.9
Sources
- CVE-2026-53676 · CVE Program
- CVE-2026-53676 · NVD
- FIRST EPSS
- GHSA-prc2-x3qx-38m9 · GitHub Advisory Database · CC BY 4.0
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