high7.5
CVE-2026-29779
UptimeFlare is a serverless uptime monitoring & status page solution, powered by Cloudflare Workers.
Impact
UptimeFlare is a serverless uptime monitoring & status page solution, powered by Cloudflare Workers. Prior to commit 377a596, configuration file uptime.config.ts exports both pageConfig (safe for client use) and workerConfig (server-only, contains sensitive data) from the same module. Due to pages/incidents.tsx importing and using workerConfig directly inside client-side component code, the entire workerConfig object was included in the client-side JavaScript bundle served to all visitors. This issue has been patched via commit 377a596.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Lyc8503 | Uptimeflare | before 2026-03-04 |