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EUVD-2026-82493 · Published Sep 17, 2026
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.
Weaknesses
CWE-89
CVSS scores
- v4.08.4
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - v3.18.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
MITRE ATT&CK
InferredWhere this vulnerability fits in an attack
Initial Access
References
- https://github.com/SigNoz/signoz
- https://github.com/SigNoz/signoz/blob/v0.141.1/pkg/apiserver/signozapiserver/querier.go#L26
- https://github.com/SigNoz/signoz/blob/v0.141.1/pkg/querybuilder/fallback_expr.go#L16-L22
- https://github.com/SigNoz/signoz/blob/v0.141.1/pkg/telemetrymetadata/field_mapper.go#L79-L87
- https://github.com/SigNoz/signoz/commit/8e00c0405697659bd4994a5de446cf3028c0f76d
- https://github.com/SigNoz/signoz/commit/9c886be12015c43a1465af3532b3c3afbec6bebc
Potentially impacted assets
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