CVE-2026-77070 n8n before 1.123.69 NoSQL Injection via MongoDB Node
Attackers can inject MongoDB operators into n8n workflows to read or delete database collections via unsanitized query parameters.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-77070?
CVE-2026-77070 is a high-severity vulnerability in N8n N8n, published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-943
Which versions are affected by CVE-2026-77070?
It affects 1 product.
Products include N8n N8n.
How do I fix CVE-2026-77070?
Upgrade to a fixed version.
Is CVE-2026-77070 being exploited?
There is no known exploitation of CVE-2026-77070 in the wild and no public exploit code.
Other vulnerabilities in N8n N8n
- CVE-2025-68613 n8n Improper Control of Dynamically-Managed Code Resources
- CVE-2026-21877 n8n is vulnerable to Remote Code Execution via Arbitrary File Write
- CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling
- CVE-2026-1470 n8n Unsafe Workflow Expression Evaluation Allows Remote Code Execution
- CVE-2025-68668 n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node
Sources
Also known as GHSA-4x9q-xqfh-jh4j, GHSA-953p-jm2c-8h5j, MINI-xmw5-mjm4-hh57.