Command injection in n8n community package installation (CVE-2026-21893)
Information currently not available to provide a detailed, function-level description beyond what is in the provided content. Based on the provided content: n8n (workflow automation platform) versions 0.187.0 to <1.120.3 contain a command injection vulnerability in the community package installation functionality that can allow an authenticated user with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions. Fixed in 1.120.3.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical command injection flaw in n8n community package installation that allows authenticated administrators to execute arbitrary system commands on the n8n host.
Authenticated command injection in n8n enabling arbitrary system command execution under specific conditions (admin permissions required).
Authenticated admin command injection in n8n leading to arbitrary system command execution under specific conditions.
A command injection vulnerability in n8n’s community package installation feature that can allow an authenticated administrative user to execute arbitrary system commands on the n8n host.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.