Amazon Q
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Worst Incident
STUPID-2026-0035 10/10Hacker slipped a data-wiping prompt into Amazon Q's VS Code extension, shipped to ~1M installs
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
Comparison Summary
| Metric | Amazon Q | Cursor |
|---|---|---|
| Total Incidents | 1 | 5 |
| Avg Severity | 10.0/10 | 6.1/10 |
| Critical Incidents | 1 | 2 |
| Top Failure Mode | Security Vulnerability | Security Vulnerability |
Frequently Asked Questions
Is Amazon Q or Cursor more reliable?
Based on StupidLLM data, Amazon Q has 1 documented failures (avg severity 10.0/10) while Cursor has 5 (avg severity 6.1/10). Cursor shows better reliability based on average severity scores.
What are the main differences between Amazon Q and Cursor failures?
Amazon Q's most common failure mode is security vulnerability, while Cursor most commonly fails via security vulnerability. Amazon Q has 1 critical incidents vs Cursor's 2.