{"id":"CVE-2026-30957","title":"OneUptime is a solution for monitoring and managing online services","summary":"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. …","severity":"critical","cvss":9.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-749"],"vendor":"hackerbay","product":"oneuptime","affected":["oneuptime < 10.0.21"],"patched":["oneuptime 10.0.21"],"published":"2026-03-10","updated":"2026-10-07","sourceUpdated":"2026-10-07T08:10:00.200","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-30957","references":[{"url":"https://github.com/OneUptime/oneuptime/releases/tag/10.0.21","label":"security-advisories@github.com"},{"url":"https://github.com/OneUptime/oneuptime/security/advisories/GHSA-jw8q-gjvg-8w4q","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.01064,"epssPercentile":0.63554,"ingestedAt":"2026-10-07T08:20:03.899Z","slug":"CVE-2026-30957","body":"## Overview\n\nOneUptime 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.\n\n## Affected\n\n- `oneuptime < 10.0.21`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `oneuptime 10.0.21`","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":54.5,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}