CVE-2026-77077 Details
n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain a JavaScript task runner VM sandbox escape. The runner's prototype-freezing routine covers globalThis functions but not internal module constructors such as EventEmitter, allowing an authenticated user with Code node access to exploit prototype pollution to execute arbitrary commands within the runner container. Because the polluted prototype is a process-wide object, the corruption persists across other tenants' Code node executions on the same shared runner. On v1.x instances without task runners enabled, Code node JavaScript runs directly in the main n8n process, where the impact could be higher.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-77077
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.31 Probability of exploitation activity being observed over the next 30 days (24rd percentile)
CVSS score for CVE-2026-77077
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
7.6 High
Products affected by CVE-2026-77077
N8n 1.43.1
N8n 1.64.1
N8n 1.70.2
N8n 1.84.2
N8n 1.99.0
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-77077 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 2,337 35.22%
DE 1,055 15.90%
FR 314 4.73%
SG 267 4.02%
GB 224 3.38%
CN 215 3.24%
VN 213 3.21%
IN 199 3.00%
RU 183 2.76%
BR 183 2.76%

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CVE-2026-77077 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 4,940 92.51%
Telecommunications 336 6.29%
Education 31 0.58%
Media/Entertainment 4 0.07%
Business Services 4 0.07%
Retail 4 0.07%
Consumer Goods 4 0.07%
Engineering 3 0.06%
Legal 3 0.06%
Government/Politics 2 0.04%

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