CVE-2026-93426

high

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.

References

https://www.vulncheck.com/advisories/signoz-0.87.0-before-0.142.0-sql-injection-in-v5-query-builder-field-key-names

https://github.com/SigNoz/signoz/security/advisories/GHSA-q3h7-gpc9-2rxc

https://github.com/SigNoz/signoz/releases/tag/v0.142.0

https://github.com/SigNoz/signoz/commit/9c886be12015c43a1465af3532b3c3afbec6bebc

https://github.com/SigNoz/signoz/commit/8e00c0405697659bd4994a5de446cf3028c0f76d

https://github.com/SigNoz/signoz/blob/v0.141.1/pkg/telemetrymetadata/field_mapper.go#L79-L87

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/apiserver/signozapiserver/querier.go#L26

https://github.com/SigNoz/signoz

Details

Source: Mitre, NVD

Published: 2026-09-17

Updated: 2026-09-18

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:N

Severity: High

CVSS v3

Base Score: 8.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Severity: High

CVSS v4

Base Score: 8.4

Vector: 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

Severity: High

EPSS

EPSS: 0.00372