Cursor
5
Incidents
6.1
Avg Severity
2
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Destructive Action
1
Infinite Loop
1
Worst Incident
STUPID-2026-0029 10/10Malicious cloned repository triggered code execution in Cursor on Windows
Github Copilot
4
Incidents
10.0
Avg Severity
4
Critical
0
High
Top Failure Modes
Security Vulnerability
4
Worst Incident
STUPID-2026-0004 10/10Copilot autocompleted AWS credentials into public repository
Comparison Summary
| Metric | Cursor | Github Copilot |
|---|---|---|
| Total Incidents | 5 | 4 |
| Avg Severity | 6.1/10 | 10.0/10 |
| Critical Incidents | 2 | 4 |
| Top Failure Mode | Security Vulnerability | Security Vulnerability |
Frequently Asked Questions
Is Cursor or Github Copilot more reliable?
Based on StupidLLM data, Cursor has 5 documented failures (avg severity 6.1/10) while Github Copilot has 4 (avg severity 10.0/10). Cursor shows better reliability based on average severity scores.
What are the main differences between Cursor and Github Copilot failures?
Cursor's most common failure mode is security vulnerability, while Github Copilot most commonly fails via security vulnerability. Cursor has 2 critical incidents vs Github Copilot's 4.