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PostgreSQL EUVD-2026-15947

| CVE-2026-33713 HIGH
SQL Injection (CWE-89)
2026-03-25 GitHub_M GHSA-98c2-4cr3-4jc3
SQLi PostgreSQL
8.7
CVSS 4.0 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
PoC Detected
Mar 27, 2026 - 19:39 vuln.today
Public exploit code
EUVD ID Assigned
Mar 25, 2026 - 18:01 euvd
EUVD-2026-15947
Analysis Generated
Mar 25, 2026 - 18:01 vuln.today
CVE Published
Mar 25, 2026 - 17:47 nvd
HIGH 8.7

DescriptionGitHub Advisory

n8n is an open source workflow automation platform. Prior to versions 2.14.1, 2.13.3, and 1.123.26, an authenticated user with permission to create or modify workflows could exploit a SQL injection vulnerability in the Data Table Get node. On default SQLite DB, single statements can be manipulated and the attack surface is practically limited. On PostgreSQL deployments, multi-statement execution is possible, enabling data modification and deletion. The issue has been fixed in n8n versions 1.123.26, 2.13.3, and 2.14.1. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Limit workflow creation and editing permissions to fully trusted users only, disable the Data Table node by adding n8n-nodes-base.dataTable to the NODES_EXCLUDE environment variable, and/or review existing workflows for Data Table Get nodes where orderByColumn is set to an expression that incorporates external or user-supplied input. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

AnalysisAI

SQL injection in n8n's Data Table Get node allows authenticated users with workflow modification permissions to execute arbitrary SQL queries against PostgreSQL backends, enabling data modification and deletion. Public exploit code exists for this vulnerability. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as n8n user
Delivery
Create or modify workflow with Data Table Get node
Exploit
Inject malicious SQL into node parameters
Execution
Execute arbitrary SQL queries on PostgreSQL database
Impact
Modify or delete sensitive data
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Vulnerability AssessmentAI

Exploitation Requires authenticated n8n user with workflow creation/modification permissions. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 8.7 with vector AV:N/AC:L/PR:L/UI:N indicates this is a remotely exploitable vulnerability with low attack complexity requiring only low-level authenticated privileges and no user interaction, presenting a significant risk profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated attacker with workflow creation privileges crafts a malicious n8n workflow containing a Data Table Get node with a specially crafted orderByColumn expression that injects SQL commands. On a PostgreSQL-backed n8n instance, the attacker executes the workflow to perform stacked SQL queries that exfiltrate sensitive workflow data, modify user permissions in the database, or delete critical configuration tables, potentially compromising the entire n8n deployment and any connected systems accessible through stored credentials. …
Remediation Upgrade n8n to version 1.123.26, 2.13.3, 2.14.1 or later depending on your current version branch to fully remediate this vulnerability (see GitHub advisory at https://github.com/n8n-io/n8n/security/advisories/GHSA-98c2-4cr3-4jc3). … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all n8n instances in your environment and determine which use PostgreSQL versus SQLite backends; restrict workflow creation/modification permissions to essential personnel only. …

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EUVD-2026-15947 vulnerability details – vuln.today
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