CVE-2026-29779

7.5 highEPSS 0.3%

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.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 23% of CVEs (scores of 2026-10-31)
CWE: CWE-200
Published: 2026-03-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

lyc8503:uptimeflare

References

https://github.com/lyc8503/UptimeFlare/commit/377a5963c66ba9a798abebfe8d80378b053435e9
https://github.com/lyc8503/UptimeFlare/issues/198
https://github.com/lyc8503/UptimeFlare/security/advisories/GHSA-36q9-v7p3-vj6v

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