{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "fed52fecd9cc384bc8cbc03d9765e5b610201eca"
            }
          ],
          "repo": "https://github.com/oneuptime/oneuptime",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jw8q-gjvg-8w4q"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-749"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30957.json"
  },
  "details": "OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, OneUptime Synthetic Monitors allow a low-privileged authenticated project user to execute arbitrary commands on the oneuptime-probe server/container. The root cause is that untrusted Synthetic Monitor code is executed inside Node's vm while live host-realm Playwright browser and page objects are exposed to it. A malicious user can call Playwright APIs on the injected browser object and cause the probe to spawn an attacker-controlled executable. This is a server-side remote code execution issue. It does not require a separate vm sandbox escape. This vulnerability is fixed in 10.0.21.",
  "id": "CVE-2026-30957",
  "modified": "2026-04-01T23:09:19.741093967Z",
  "published": "2026-03-10T16:58:28.216Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/OneUptime/oneuptime/releases/tag/10.0.21"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30957.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/OneUptime/oneuptime/security/advisories/GHSA-jw8q-gjvg-8w4q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30957"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OneUptime Synthetic Monitor RCE via exposed Playwright browser object"
}