CVE-2026-93426

HIGH
Published Sep 17, 2026 Modified Sep 22, 2026 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.

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CVSS v3.1 Score

8.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS — Exploit Prediction

0.0050
Probability of exploitation
0.41%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-89 SQL Injection

References

Other 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

Frequently Asked Questions

What is CVE-2026-93426? +
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. It has a CVSS v3.1 base score of 8.5 (HIGH).
How severe is CVE-2026-93426? +
CVE-2026-93426 has a CVSS v3.1 score of 8.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0050, placing it in the 0th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-93426? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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