CVE-2026-21893
n8n Vulnerable to Command Injection in Community Package Installation
n8n is an open source workflow automation platform. From version 0.187.0 to before 1.120.3, a command injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions. This issue has been patched in version 1.120.3.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
n8n Vulnerable to Command Injection in Community Package Installation
n8n is an open source workflow automation platform. From version 0.187.0 to before 1.120.3, a command injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions. This issue has been patched in version 1.120.3.
- Record
CVE-2026-21893- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-78, CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2026-5369
n8n is an open source workflow automation platform. From version 0.187.0 to before 1.120.3, a command injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions. This issue has been patched in version 1.120.3.
- Record
EUVD-2026-5369- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7c4h-vh2m-743m
n8n Vulnerable to Command Injection in Community Package Installation
Impact
A Command Injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions.
Important context
- Exploitation requires administrative access to the n8n instance.
- The affected functionality is restricted to trusted users who are already permitted to install third-party community packages.
- No unauthenticated or low-privilege exploitation is possible.
- There is no evidence of exploitation in the wild.
Because administrative users can already extend n8n with custom or community code, the vulnerability does not meaningfully expand the threat model beyond existing administrator capabilities. However, it represents a violation of secure coding practices and has therefore been addressed.
Patches
Users are advised to upgrade to n8n version 1.120.3 or later, which fully resolves the issue.
As a general security best practice, n8n instance owners should ensure that:
- Administrative access is limited to trusted users only.
- Community packages are installed only from trusted sources.
- Instances are kept up to date with the latest security releases.
- Record
GHSA-7c4h-vh2m-743m- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-20, CWE-78
- Updated
- 2026-11-02
NVD
n8n is an open source workflow automation platform. From version 0.187.0 to before 1.120.3, a command injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions. This issue has been patched in version 1.120.3.
- Record
CVE-2026-21893- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20, CWE-78
- Updated
- 2026-11-02
OSV
n8n Vulnerable to Command Injection in Community Package Installation
n8n is an open source workflow automation platform. From version 0.187.0 to before 1.120.3, a command injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions. This issue has been patched in version 1.120.3.
- Record
CVE-2026-21893- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-20, CWE-78
- Updated
- 2026-11-02
OSVGHSA-7c4h-vh2m-743m
n8n Vulnerable to Command Injection in Community Package Installation
Impact
A Command Injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions.
Important context
- Exploitation requires administrative access to the n8n instance.
- The affected functionality is restricted to trusted users who are already permitted to install third-party community packages.
- No unauthenticated or low-privilege exploitation is possible.
- There is no evidence of exploitation in the wild.
Because administrative users can already extend n8n with custom or community code, the vulnerability does not meaningfully expand the threat model beyond existing administrator capabilities. However, it represents a violation of secure coding practices and has therefore been addressed.
Patches
Users are advised to upgrade to n8n version 1.120.3 or later, which fully resolves the issue.
As a general security best practice, n8n instance owners should ensure that:
- Administrative access is limited to trusted users only.
- Community packages are installed only from trusted sources.
- Instances are kept up to date with the latest security releases.
- Record
GHSA-7c4h-vh2m-743m- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-20, CWE-78
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
n8nnpm | 0.187.0 up to 1.120.3 | 1.120.3 |
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-2026-21893 is a critical vulnerability (CVSS 9.4) in N8n, published February 4, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.54%, the 75th percentile. Fixed in n8n 1.120.3.
References
github.com/n8n-io/n8n/security/advisories/GHSA-7c4h-vh2m-743m
nvd.nist.gov/vuln/detail/CVE-2026-21893