Vulnerability details
CVE-2026-77070
n8n-io n8n
n8n before 1.123.69 NoSQL Injection via MongoDB Node
CVSS 4.0
7.1High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| n8n-io | n8n | v < 1.123.69 | CVEProject cvelistV5 (CNA) |
| n8n-io | n8n | 2.0.0 ≤ v < 2.33.4 | CVEProject cvelistV5 (CNA) |
| n8n-io | n8n | 2.34.0 ≤ v < 2.34.1 | CVEProject cvelistV5 (CNA) |
References and advisories
2- https://github.com/n8n-io/n8n/security/advisories/GHSA-953p-jm2c-8h5j vendor-advisory
- https://www.vulncheck.com/advisories/n8n-before-nosql-injection-via-mongodb-node third-party-advisory
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Details
- Published
- 2026-08-20
- Last updated
- 2026-08-21
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.51%
Probability of exploitation in 30 days
43.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-943Improper Neutralization of Special Elements in Data Query Logic