FKIE_CVE-2026-29779

Vulnerability from fkie_nvd - Published: 2026-03-07 16:15 - Updated: 2026-03-11 22:07
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/lyc8503/UptimeFlare/commit/377a5963c66ba9a798abebfe8d80378b053435e9Patch
security-advisories@github.comhttps://github.com/lyc8503/UptimeFlare/issues/198Issue Tracking
security-advisories@github.comhttps://github.com/lyc8503/UptimeFlare/security/advisories/GHSA-36q9-v7p3-vj6vVendor Advisory
Impacted products
Vendor Product Version
lyc8503 uptimeflare *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:lyc8503:uptimeflare:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3F0BF86D-7167-41AE-A8B1-CC603467A5C2",
              "versionEndExcluding": "2026-03-04",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "UptimeFlare is a serverless uptime monitoring \u0026 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."
    },
    {
      "lang": "es",
      "value": "UptimeFlare es una soluci\u00f3n sin servidor de monitoreo de tiempo de actividad y p\u00e1gina de estado, impulsada por Cloudflare Workers. Antes del commit 377a596, el archivo de configuraci\u00f3n uptime.config.ts exportaba tanto pageConfig (seguro para uso del cliente) como workerConfig (solo para servidor, contiene datos sensibles) desde el mismo m\u00f3dulo. Debido a que pages/incidents.tsx importaba y usaba workerConfig directamente dentro del c\u00f3digo del componente del lado del cliente, el objeto workerConfig completo se incluy\u00f3 en el paquete JavaScript del lado del cliente servido a todos los visitantes. Este problema ha sido parcheado mediante el commit 377a596."
    }
  ],
  "id": "CVE-2026-29779",
  "lastModified": "2026-03-11T22:07:38.207",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-07T16:15:54.953",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/lyc8503/UptimeFlare/commit/377a5963c66ba9a798abebfe8d80378b053435e9"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/lyc8503/UptimeFlare/issues/198"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/lyc8503/UptimeFlare/security/advisories/GHSA-36q9-v7p3-vj6v"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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