CVE-2026-77070: Improper Neutralization of Special Elements in Data Query Logic in n8n-io n8n
Description
n8n versions prior to 1.123.69, 2.33.4, and 2.34.1 contain a NoSQL injection vulnerability in the MongoDB node's Find, Delete, and Aggregate operations. The vulnerability arises because the Query parameter is parsed as JSON after expression resolution without sanitizing MongoDB operators, allowing injection of special operators like $ne or $where. This can lead to unauthorized full-collection disclosure, deletion, or other database operations.
CVSS v4.0
Score 7.1high
Affected software
n8n-io
n8n
n8n-io
n8n
n8n-io
n8n
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 before versions 1.123.69, 2.33.4, and 2.34.1. The MongoDB node's Find, Delete, and Aggregate operations parse the Query parameter as JSON after expression resolution but fail to sanitize MongoDB operators. An attacker who can influence the resolved query can inject operators such as $ne or $where, which can escalate a single-document lookup into broader unauthorized database operations including full collection disclosure or deletion.
Potential Impact
An attacker able to control the resolved query parameter can exploit this vulnerability to perform unauthorized database operations such as disclosing the entire collection, deleting full collections, or executing other unintended commands on the MongoDB server. This can lead to significant data exposure or loss.
Mitigation Recommendations
A fix is available in n8n versions 1.123.69, 2.33.4, and 2.34.1. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation guidance is provided in the input data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-20T10:51:39.783Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a86e706acd9273b498befaa
Added to database: 08/20/2026, 11:37:42 UTC
Last enriched: 09/11/2026, 02:01:58 UTC
Last updated: 10/05/2026, 06:48:18 UTC
Views: 65
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.