by Kastro
Paper/Archive/CVE-2026-77070

CVE-2026-77070

n8n-io n8n — n8n before 1.123.69 NoSQL Injection via MongoDB Node

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 43.6.436 × 208.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
n8n< 1.123.691.123.69CNA
n8n2.34.0 – < 2.34.12.34.1CNA
n8n2.0.0 – < 2.33.42.33.4CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)7.1CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

advisorygithub.com/n8n-io/n8n/security/advisories/GHSA-953p-jm2c-8h5jwriteupvulncheck.com/advisories/n8n-before-nosql-injection-via-mongodb-node