{"id":"CVE-2026-119552","aliases":[],"cve":{"records":[{"id":"CVE-2026-119552","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-30T10:53:26.670Z","published":"2026-10-30T11:31:03.438Z","modified":"2026-10-30T15:54:36.118Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-30T11:31:03.438Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-30T15:54:36.118Z"}],"references":[{"url":"https://github.com/louislam/uptime-kuma/blob/2.5.8/server/server.js#L705-L722","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://abraxaslabs.tech/research/uptime-kuma-setup-toctou","tags":["third-party-advisory"],"source":"VulnCheck"},{"url":"https://github.com/louislam/uptime-kuma","tags":["product"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/uptime-kuma-through-2.5.8-race-condition-admin-creation-via-setup-handler","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-367","description":"Time-of-check Time-of-use (TOCTOU) Race Condition","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:uptime-kuma_project:uptime-kuma:*:*:*:*:*:*:*:*","versionEndIncluding":"2.5.8"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-30T15:21:04.753408Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Uptime Kuma through 2.5.8 Race Condition Admin Creation via Setup Handler","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"Uptime Kuma through 2.5.8 contains a race condition in the Socket.IO first-run setup handler that allows unauthenticated attackers to create an additional administrator account. Attackers can send concurrent setup requests during the bcrypt hashing window to bypass the empty user table check, then modify monitors, API keys, and enable disableAuth.","score":6.3,"severity":"medium","published":"2026-10-30T11:31:03.438Z","modified":"2026-10-30T15:54:36.118Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"louislam","name":"uptime-kuma","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.5.8","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:github/louislam/uptime-kuma","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-119552"}],"remediation":[],"references":["https://github.com/louislam/uptime-kuma/blob/2.5.8/server/server.js#L705-L722","https://abraxaslabs.tech/research/uptime-kuma-setup-toctou","https://github.com/louislam/uptime-kuma","https://www.vulncheck.com/advisories/uptime-kuma-through-2.5.8-race-condition-admin-creation-via-setup-handler"],"sources":[{"name":"CVE","id":"CVE-2026-119552","modified":"2026-10-30T15:54:36.118Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-119552"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8}],"sourceAffected":[],"observedAt":"2026-10-30T17:20:18.114Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T09:35:34.504Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T12:30:40.896Z","attemptedAt":"2026-10-30T12:30:40.896Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-10-30T12:30:38.594Z","attemptedAt":"2026-10-30T12:30:38.594Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T12:30:41.374Z","attemptedAt":"2026-10-30T12:30:41.374Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-30T12:30:39.759Z","attemptedAt":"2026-10-30T12:30:39.759Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-119552","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119552","modified":"2026-10-30T12:16:42.100","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-10-30T12:30:40.896Z"},{"source":"NVD","id":"CVE-2026-119552","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119552","modified":"2026-10-30T12:16:42.100","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","checkedAt":"2026-10-30T12:30:40.896Z"},{"source":"ENISA EUVD","id":"EUVD-2026-113817","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-113817","modified":"Oct 30, 2026, 11:31:03 AM","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","checkedAt":"2026-10-30T12:30:41.374Z"}],"aiSummary":{"text":"Uptime Kuma through version 2.5.8 has a race condition vulnerability that allows unauthenticated attackers to create an administrator account by sending concurrent setup requests. This weakness can be used to modify monitors, API keys, and disable authentication.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T11:46:04.221Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-119552"}]}}