CVE-2026-77070

n8n before 1.123.69 NoSQL Injection via MongoDB Node

State: Published
Severity: 7.1 High
Published: Aug 20, 2026
Updated: Aug 21, 2026
Reserved: Aug 20, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H	VulnCheck

Weaknesses

CWE-943 Improper Neutralization of Special Elements in Data Query Logic

Affected Products

Product	Versions
n8nn8n-io	before 1.123.69Affected 1.123.69Not affected
n8nn8n-io	2.34.0 to before 2.34.1Affected 2.34.1Not affected
n8nn8n-io	2.0.0 to before 2.33.4Affected 2.33.4Not affected

References

GitHub Security Advisory (GHSA-953p-jm2c-8h5j)vendor-advisory
VulnCheck Advisory: n8n before 1.123.69 NoSQL Injection via MongoDB Nodethird-party-advisory

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