What’s Vulnerable › Vulnerabilities

CVE-2026-93426: SigNoz 0.87.0 before 0.142.0 - SQL Injection in v5 Query Builder Field Key Names

• Severity: high (CVSS 8.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-09-22
• Weakness: CWE-89

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.

Affected products

• signoz: from 0.87.0 before 0.142.0 — fixed in 0.142.0

How to fix

Upgrade to a fixed version: signoz 0.142.0. Check the vendor advisory for mitigations.

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
• https://github.com/SigNoz/signoz/releases/tag/v0.142.0
• https://github.com/SigNoz/signoz/security/advisories/GHSA-q3h7-gpc9-2rxc
• 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

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