CVE-2026-42237
n8n: SQL Injection in Snowflake and MySQL Nodes
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the fix for GHSA-f3f2-mcxc-pwjx did not cover the Snowflake node or the legacy MySQL v1 node. Both nodes construct SQL queries by directly interpolating user-controlled table names, column names, and update keys into query strings without identifier escaping, enabling SQL injection against the connected database. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
n8n: SQL Injection in Snowflake and MySQL Nodes
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the fix for GHSA-f3f2-mcxc-pwjx did not cover the Snowflake node or the legacy MySQL v1 node. Both nodes construct SQL queries by directly interpolating user-controlled table names, column names, and update keys into query strings without identifier escaping, enabling SQL injection against the connected database. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
- Record
CVE-2026-42237- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N - Weakness
- CWE-89
- Updated
- 2026-11-02
EUVDEUVD-2026-27113
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the fix for GHSA-f3f2-mcxc-pwjx did not cover the Snowflake node or the legacy MySQL v1 node. Both nodes construct SQL queries by directly interpolating user-controlled table names, column names, and update keys into query strings without identifier escaping, enabling SQL injection against the connected database. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
- Record
EUVD-2026-27113- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hp3c-vfpm-q4f7
n8n has SQL Injection in Snowflake and MySQL Nodes
Impact
The fix for GHSA-f3f2-mcxc-pwjx did not cover the Snowflake node or the legacy MySQL v1 node. Both nodes construct SQL queries by directly interpolating user-controlled table names, column names, and update keys into query strings without identifier escaping, enabling SQL injection against the connected database.
Exploitation requires a specific workflow configuration:
- The Snowflake or MySQL v1 node must be used with user-controlled input passed via expressions (e.g., from a form or webhook) into identifier fields such as table name, column name, or update key.
Successful exploitation could allow data exfiltration, modification, or deletion on the downstream database.
Patches
The issue has been fixed in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to one of these versions or later to remediate the vulnerability.
Workarounds
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
- Limit workflow creation and editing permissions to fully trusted users only.
- Migrate workflows from the legacy MySQL v1 node to the MySQL v2 node, which already implements identifier escaping.
- Disable the Snowflake node by adding
n8n-nodes-base.snowflaketo theNODES_EXCLUDEenvironment variable. - Avoid passing unvalidated external user input into table name, column name, or update key fields via expressions in the affected nodes.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
- Record
GHSA-hp3c-vfpm-q4f7- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N - CVSS 3.1
- 8.2 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-89
- Updated
- 2026-11-02
NVD
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the fix for GHSA-f3f2-mcxc-pwjx did not cover the Snowflake node or the legacy MySQL v1 node. Both nodes construct SQL queries by directly interpolating user-controlled table names, column names, and update keys into query strings without identifier escaping, enabling SQL injection against the connected database. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
- Record
CVE-2026-42237- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/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 - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-89
- Updated
- 2026-11-02
OSV
n8n: SQL Injection in Snowflake and MySQL Nodes
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the fix for GHSA-f3f2-mcxc-pwjx did not cover the Snowflake node or the legacy MySQL v1 node. Both nodes construct SQL queries by directly interpolating user-controlled table names, column names, and update keys into query strings without identifier escaping, enabling SQL injection against the connected database. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
- Record
CVE-2026-42237- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N - Weakness
- CWE-89
- Updated
- 2026-11-02
OSVGHSA-hp3c-vfpm-q4f7
n8n has SQL Injection in Snowflake and MySQL Nodes
Impact
The fix for GHSA-f3f2-mcxc-pwjx did not cover the Snowflake node or the legacy MySQL v1 node. Both nodes construct SQL queries by directly interpolating user-controlled table names, column names, and update keys into query strings without identifier escaping, enabling SQL injection against the connected database.
Exploitation requires a specific workflow configuration:
- The Snowflake or MySQL v1 node must be used with user-controlled input passed via expressions (e.g., from a form or webhook) into identifier fields such as table name, column name, or update key.
Successful exploitation could allow data exfiltration, modification, or deletion on the downstream database.
Patches
The issue has been fixed in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to one of these versions or later to remediate the vulnerability.
Workarounds
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
- Limit workflow creation and editing permissions to fully trusted users only.
- Migrate workflows from the legacy MySQL v1 node to the MySQL v2 node, which already implements identifier escaping.
- Disable the Snowflake node by adding
n8n-nodes-base.snowflaketo theNODES_EXCLUDEenvironment variable. - Avoid passing unvalidated external user input into table name, column name, or update key fields via expressions in the affected nodes.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
- Record
GHSA-hp3c-vfpm-q4f7- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N - CVSS 3.1
- 8.2 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-89
- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-42237 is a medium vulnerability (CVSS 5.3) in N8n, published April 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 17th percentile. Fixed in n8n 1.123.32.
References
github.com/n8n-io/n8n/security/advisories/GHSA-hp3c-vfpm-q4f7
nvd.nist.gov/vuln/detail/CVE-2026-42237