CVE-2026-93426 SigNoz 0.87.0 before 0.142.0 - SQL Injection in v5 Query Builder Field Key Names
Authenticated users can inject SQL via field names in the query API to read system tables and exfiltrate data from ClickHouse.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93426?
CVE-2026-93426 is a high-severity SQL injection vulnerability in signoz, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
SigNoz versions 0.87.0 before 0.142.0 fail to escape user-supplied telemetry field-key names in the v5 query_range API, allowing authenticated users to inject SQL. Attackers with Viewer role or higher can embed backticks and quotes in field names to break out of identifiers and string literals, executing arbitrary ClickHouse SQL to read system tables and exfiltrate data.
Weakness: CWE-89
Which versions are affected by CVE-2026-93426?
How do I fix CVE-2026-93426?
No fix has been published for CVE-2026-93426 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-2026-93426 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93426 exists.
Sources
Also known as GHSA-q3h7-gpc9-2rxc.