ThingLinks: Unauthenticated SQL injection in TDengine TDS APIs
Summary
ThingLinks, an enterprise IoT platform, contains an SQL injection flaw in the TDengine TDS API endpoint /anyUser/tds/insertTableData. JSON field values are passed unsafely into SQL statements generated by the TDS mapper. A remote attacker without authentication can insert unintended rows or overwrite existing time-series readings in TDengine, which can lead to wrong dashboard values and alarms. Confidentiality is not rated as affected.
Affected
- mqttsnet ThingLinks versions before 1.4.0
- Affected component: TDengine TDS APIs (TDS module, insert-table-data flow)
Fixed in
- Fixed in ThingLinks 1.4.0 (release notes: moved TDS operations behind internal routes, validated dynamic identifiers, bound values as parameters)
- Unknown whether any older maintenance branch received a backport.
Workaround
- No vendor-published workaround found.
- Restrict network access to the ThingLinks HTTP interface and block internet access to the /anyUser/ paths until the upgrade is complete.
- Keep the TDengine database off untrusted networks.
Exploitation
- No confirmed exploitation in the wild at time of writing.
- Not listed in CISA KEV. CISA SSVC: Exploitation none, automatable yes, technical impact partial.
- No public proof of concept known in the indexes checked; status may change.
Our recommendation
- Inventory all ThingLinks instances and confirm their version.
- Remove internet exposure of ThingLinks and the /anyUser/ paths now.
- Upgrade to 1.4.0 as soon as it can be tested. The same release also fixes CVE-2026-62853 (Groovy script code execution).
- Review web server, application and TDengine logs for SQL errors or unexpected inserts on the insert-table-data flow.
- Check the vendor advisory GHSA-gcj7-r5wv-348x for updates to the affected range.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Vendor commit 60e7a93 github.com
- ThingLinks release v1.4.0 github.com
- GitHub security advisory GHSA-gcj7-r5wv-348x github.com
- Strix CVE-2026-62849 www.strix.ai
- OffSeq radar CVE-2026-62849 radar.offseq.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 05:04.
Original description (NVD)
ThingLinks is an enterprise IoT platform. Prior to 1.4.0, an unauthenticated SQL injection vulnerability in the `TDengine TDS APIs` allows request-controlled JSON field values submitted to `/anyUser/tds/insertTableData` to reach unsafe SQL construction in the `TDS mapper`. A remote unauthenticated attacker can tamper with TDengine time-series data, including inserting unintended rows or overwriting existing readings. The affected surface is the TDS module's insert-table-data flow and TDengine mapper SQL generation. This issue is fixed in version 1.4.0.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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