CVE-2026-119552: medium-severity vulnerability in louislam uptime-kuma
Uptime Kuma through 2.5.8 Race Condition Admin Creation via Setup Handler
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 0.2%
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.
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
Affected products
louislam · uptime-kumaRelated CVEs — louislam uptime-kuma
In the same product, most dangerous first.
CVE-2023-36821HIGHUptime Kuma vulnerable to authenticated remote code execution via malicious plugin installationEPSS 2.0%CVE-2024-56331MEDIUMLocal File Inclusion (LFI) via Improper URL Handling in uptime-kuma's `Real-Browser` monitorEPSS 1.8%CVE-2023-36822MEDIUMUptime Kuma authenticated path traversal via plugin repository name may lead to unavailability or data lossEPSS 1.2%CVE-2026-32230MEDIUMUptime Kuma is Missing Authorization Checks on Ping Badge Endpoint, Leaks Ping times of monitors without needing to be on a status pageEPSS 0.9%CVE-2023-49276MEDIUMAttribute Injection leading to XSS(Cross-Site-Scripting) in uptime-kumaEPSS 0.5%CVE-2023-25811MEDIUMPersistent Cross site scripting (XSS) in Uptime KumaEPSS 0.5%