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GHSA-f3f2-mcxc-pwjx
No affected components available
Impact
An authenticated user with permission to create or modify workflows and access to a database credential could unknowingly create a workflow that was vulnerable to SQL injection, even while expecting inputs to be handled safely through escaped parameters. By supplying specially crafted table or column names, an attacker could inject arbitrary SQL because the MySQL, PostgreSQL, and Microsoft SQL nodes did not escape identifier values when constructing queries, enabling injection through node configuration parameters.
Patches
The issue has been fixed in n8n version 2.4.0. Users should upgrade to this version 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.
- Disable the MySQL, PostgreSQL, and Microsoft SQL nodes by adding
n8n-nodes-base.mySql,n8n-nodes-base.postgres, andn8n-nodes-base.microsoftSqlto theNODES_EXCLUDEenvironment variable.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
Credit
Reporter: Pawel Bednarz from the NATO Cyber Security Centre (NCSC)
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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