CVE-2026-47720 FUXA: SQL injection in TDengine DAQ connector via backslash bypass of escapeTdString
Remote unauthenticated attackers can inject SQL via crafted tag identifiers to expose historical PLC data and device information in FUXA.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47720?
CVE-2026-47720 is a medium-severity SQL injection vulnerability in frangoteam FUXA, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. Prior to 1.3.2, the TDengine DAQ storage connector's escapeTdString function in server/runtime/storage/tdengine/index.js doubles single quotes but does not escape backslashes. A remote unauthenticated attacker can submit a crafted sids tag identifier through GET /api/daq or the Socket.IO DAQ_QUERY event so TDengine interprets the backslash and quote sequence as SQL syntax. The injected query can return every row from fuxa.meters, exposing historical PLC tag values, device identifiers, and device names even when FUXA authentication is enabled. This issue is fixed in version 1.3.2.
Weakness: CWE-89
Which versions are affected by CVE-2026-47720?
2 open source packages ship an affected version, including fuxa-server.
| Package | Affected | Fixed in |
|---|---|---|
fuxa-server npm | All versions to 1.1.14-1243 | None |
fuxa-server npm | All versions to 1.1.14-1243 | None |
How do I fix CVE-2026-47720?
No fix has been published for CVE-2026-47720 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-47720 being exploited?
There is no known exploitation of CVE-2026-47720 in the wild and no public exploit code.
Sources
Also known as GHSA-h9fj-c2qr-76g2.