CVE-2026-77070: Improper Neutralization of Special Elements in Data Query Logic in n8n-io n8n
n8n before 1.123.69, 2.33.4, and 2.34.1 contains a NoSQL injection vulnerability in the MongoDB node's Find, Delete, and Aggregate operations, which parse the Query parameter as JSON after expression resolution without sanitizing MongoDB operators. An attacker who can influence the resolved query (e.g., via externally-controlled data) can inject operators such as $ne or $where, turning an intended single-document lookup into full-collection disclosure, full-collection deletion, or other operations on the database server.
AI Analysis
Technical Summary
CVE-2026-77070 is a NoSQL injection vulnerability affecting n8n versions prior to 1.123.69, 2.33.4, and 2.34.1. The issue exists in the MongoDB node's Find, Delete, and Aggregate operations, where the Query parameter is parsed as JSON after expression resolution without proper sanitization of MongoDB operators. An attacker able to control the resolved query can inject MongoDB operators such as $ne or $where, which can escalate a single-document query into a full-collection disclosure, deletion, or other unauthorized database operations.
Potential Impact
An attacker who can influence the resolved query parameter can exploit this vulnerability to perform unauthorized database operations, including full-collection disclosure or deletion. This can lead to significant data compromise or loss within the affected n8n MongoDB backend.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Users should monitor the vendor's advisories for updates and apply patches once available. Until then, restrict access to the MongoDB node's query inputs to trusted sources only to reduce risk.
CVE-2026-77070: Improper Neutralization of Special Elements in Data Query Logic in n8n-io n8n
Description
n8n before 1.123.69, 2.33.4, and 2.34.1 contains a NoSQL injection vulnerability in the MongoDB node's Find, Delete, and Aggregate operations, which parse the Query parameter as JSON after expression resolution without sanitizing MongoDB operators. An attacker who can influence the resolved query (e.g., via externally-controlled data) can inject operators such as $ne or $where, turning an intended single-document lookup into full-collection disclosure, full-collection deletion, or other operations on the database server.
CVSS v4.0
Score 7.1high
Affected software
pkg:github/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
CVE-2026-77070 is a NoSQL injection vulnerability affecting n8n versions prior to 1.123.69, 2.33.4, and 2.34.1. The issue exists in the MongoDB node's Find, Delete, and Aggregate operations, where the Query parameter is parsed as JSON after expression resolution without proper sanitization of MongoDB operators. An attacker able to control the resolved query can inject MongoDB operators such as $ne or $where, which can escalate a single-document query into a full-collection disclosure, deletion, or other unauthorized database operations.
Potential Impact
An attacker who can influence the resolved query parameter can exploit this vulnerability to perform unauthorized database operations, including full-collection disclosure or deletion. This can lead to significant data compromise or loss within the affected n8n MongoDB backend.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Users should monitor the vendor's advisories for updates and apply patches once available. Until then, restrict access to the MongoDB node's query inputs to trusted sources only to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-20T10:51:39.783Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a86e706acd9273b498befaa
Added to database: 08/20/2026, 11:37:42 UTC
Last enriched: 08/20/2026, 11:53:55 UTC
Last updated: 08/20/2026, 18:52:05 UTC
Views: 4
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