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CVE

CVE-2026-29779

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

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29779.json, https://github.com/lyc8503/UptimeFlare/security/advisories/GHSA-36q9-v7p3-vj6v, https://nvd.nist.gov/vuln/detail/CVE-2026-29779, https://github.com/lyc8503/UptimeFlare/issues/198, https://github.com/lyc8503/UptimeFlare/commit/377a5963c66ba9a798abebfe8d80378b053435e9

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00043%
EPSS Percentile
0.13072%
Introduced Version
0
Fix Available
377a5963c66ba9a798abebfe8d80378b053435e9

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