Outray openSource ngrok alternative. Prior to 0.1.5, this vulnerability allows a user i.e a free plan user to get more than the desired subdomains due to lack of db transaction lock mechanisms in main/apps/web/src/routes/api/$orgSlug/subdomains/index.ts. This vulnerability is fixed in 0.1.5.
https://github.com/outray-tunnel/outray/security/advisories/GHSA-45hj-9x76-wp9g
https://github.com/outray-tunnel/outray/commit/73e8a09575754fb4c395438680454b2ec064d1d6