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HIGHCVE-2026-29779Published Modified CNA GitHub_M

CVE-2026-29779: UptimeFlare: Montior config / Credentials in `workerConfig` exposed in client-side JavaScript bundle

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.

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
Affected Products
1
Affected packages
  • lyc8503 / UptimeFlare
    < 377a5963c66ba9a798abebfe8d80378b053435e9
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVE-2026-29779: UptimeFlare: Montior config / Credentials in `workerConfig` exposed in client-side JavaScript bundle | HarborGuard CVE