CVE-2026-77084: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in n8n-io n8n
Description
CVE-2026-77084 is a high-severity OS command injection vulnerability in the n8n automation tool's Git node. Versions before 1.123.69 and certain 2.x versions prior to 2.33.4/2.34.1 are affected. The vulnerability arises because the Git node executes repository-local git configuration values without proper neutralization, allowing malicious values to be executed as the n8n process user. Exploitation requires an additional file-write vulnerability to plant the malicious configuration value, as the Git node's own configuration controls do not allow direct exploitation.
CVSS v4.0
Score 7.7high
Affected software
n8n-io
n8n
n8n-io
n8n
n8n-io
n8n
pkg:npm/n8n-io/n8nRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in n8n's Git node involves improper neutralization of special elements used in OS commands, leading to OS command injection. Specifically, repository-local git configuration values are executed without sanitization, which could allow arbitrary code execution under the n8n process user context. However, this attack vector is not directly accessible via the Git node's configuration and requires a separate file-write vulnerability to introduce the malicious git configuration value. Affected versions include all releases before 1.123.69 in the 1.x series, and certain 2.x versions before 2.33.4 and 2.34.1.
Potential Impact
Successful exploitation could lead to arbitrary code execution with the privileges of the n8n process user. This could allow an attacker to execute OS commands on the host system. However, exploitation requires chaining with another vulnerability that allows writing malicious git configuration values to the repository, limiting the attack surface.
Mitigation Recommendations
A fix is available in n8n versions 1.123.69 and later, as well as 2.33.4 and 2.34.1 and later. Users should upgrade to these versions to remediate the vulnerability. No additional mitigation steps are indicated given the patch availability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-20T10:55:09.093Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a86e708acd9273b498befd8
Added to database: 08/20/2026, 11:37:44 UTC
Last enriched: 09/11/2026, 01:46:55 UTC
Last updated: 10/04/2026, 18:53:18 UTC
Views: 75
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