Which versions of PostgreSQL are affected by CVE-2026-33713?

A SQL injection vulnerability in n8n's Data Table Get node allows authenticated workflow users to manipulate database queries, posing a critical risk to organizations using PostgreSQL backends where…. A patch is available.

Is there a public PoC exploit available for CVE-2026-33713?

Yes, a public proof-of-concept exploit is available for CVE-2026-33713. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-33713?

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. Within 7 days: Implement network segmentation to limit n8n database access, disable the Data Table Get node if unused, and apply input validation/WAF rules to detect SQL injection patterns in workflow definitions. Within 30 days: Monitor vendor communications for patch availability and establish a deployment plan; conduct a review of all existing workflows using Data Table Get nodes for potential compromise.

PostgreSQL CVE-2026-33713

Q: What is the CVSS score of CVE-2026-33713?

CVE-2026-33713 has a CVSS 4.0 base score of 8.7 (High). CVSS vector: 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. EPSS exploitation probability: 0.0%.

EUVD-2026-15947 HIGH

SQL Injection (CWE-89)

2026-03-25 GitHub_M

GHSA-98c2-4cr3-4jc3

SQLi PostgreSQL

8.7

CVSS 4.0 · GitHub Advisory

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

Lifecycle Timeline

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

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

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.

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. …

Threat intelligence, references, and detailed analysis are available after sign-in.

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