You can detect Sentry Instances using this tool. Sentry has a blind SSRF vulnerability.
Sentry's application monitoring platform helps every developer diagnose, fix, and optimize the performance of their code.
An attacker might use the disclosed information to harvest specific security vulnerabilities for the application identified.
Only use components that do not have known vulnerabilities, only use components that when combined to not introduce a security vulnerability, and ensure that a misconfiguration does not cause any vulnerabilities.