CVE-2026-30951

HighPublic PoC

Published: 10 March 2026

Published

10 March 2026

Modified

18 March 2026

KEV Added

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Patch

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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Score 0.0002 5.8th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-30951 is a high-severity SQL Injection (CWE-89) vulnerability in Sequelizejs Sequelize. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 5.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2026-30951 is a SQL injection vulnerability in Sequelize, a Node.js Object-Relational Mapping (ORM) tool. Versions prior to 6.37.8 are affected due to improper handling of unescaped cast types in JSON/JSONB where clause processing. Specifically, the _traverseJSON() function splits JSON path keys on "::" to extract a cast type, which is then interpolated raw into a CAST(... AS <type>) SQL expression, allowing injection of arbitrary SQL. The vulnerability is rated with a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) and is associated with CWE-89: Improper Neutralization of Special Elements used in an SQL Command.

An unauthenticated attacker with the ability to control JSON object keys in a where clause can exploit this vulnerability remotely over the network with low complexity and no user interaction required. By crafting malicious JSON keys containing SQL payloads separated by "::", the attacker can inject arbitrary SQL, enabling data exfiltration from any table in the underlying database.

The official mitigation, as detailed in the Sequelize security advisory (GHSA-6457-6jrx-69cr), is to upgrade to version 6.37.8 or later, where the cast type handling has been fixed to prevent raw interpolation.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-10870

Vulnerability details

Sequelize is a Node.js ORM tool. Prior to 6.37.8, there is SQL injection via unescaped cast type in JSON/JSONB where clause processing. The _traverseJSON() function splits JSON path keys on :: to extract a cast type, which is interpolated raw…

into CAST(... AS <type>) SQL. An attacker who controls JSON object keys can inject arbitrary SQL and exfiltrate data from any table. This vulnerability is fixed in 6.37.8.

CWE(s): CWE-89

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1213.006 Databases Collection

Adversaries may leverage databases to mine valuable information.

attack.mitre.org →

Why these techniques?

SQL injection in public-facing Node.js/ORM app enables remote unauthenticated exploitation (T1190) and direct arbitrary queries for database data exfiltration (T1213.006).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1