{"id":"CVE-2025-26042","details":"Uptime Kuma \u003e== 1.23.0 has a ReDoS vulnerability, specifically when an administrator creates a notification through the web service. If a string is provided it triggers catastrophic backtracking in the regular expression, leading to a ReDoS attack.","aliases":["GHSA-hx7h-9vf7-5xhg"],"modified":"2026-08-12T03:51:32.217911149Z","published":"2025-03-17T00:00:00Z","database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/26xxx/CVE-2025-26042.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/26xxx/CVE-2025-26042.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-26042"},{"type":"REPORT","url":"https://github.com/louislam/uptime-kuma/issues/5574"},{"type":"FIX","url":"https://github.com/louislam/uptime-kuma/commit/7a9191761dbef6551c2a0aa6eed5f693ba48d688"},{"type":"FIX","url":"https://github.com/louislam/uptime-kuma/pull/5573"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/louislam/uptime-kuma","events":[{"introduced":"0"},{"fixed":"7a9191761dbef6551c2a0aa6eed5f693ba48d688"}],"database_specific":{"source":"REFERENCES"}}],"versions":["1.23.1","1.23.0","1.23.0-beta.1","1.23.0-beta.0","1.21.2","1.21.2-beta.0","1.21.1","1.21.0","1.21.0-beta.1","1.21.0-beta.0","1.20.0-beta.0","1.19.4","1.19.3","1.19.2","1.19.1","1.19.0","1.19.0-beta.2","1.19.0-beta.1","1.17.1","1.17.0","1.17.0-beta.1","1.17.0-beta.0","1.16.0-beta.0","1.14.0-beta.2","1.14.0-beta.1","1.12.1","1.12.0","1.11.4","1.11.3","1.11.2","1.11.1","1.11.0","1.10.2","1.10.1","1.10.0","1.9.1","1.9.0","1.7.0","1.6.0","1.3.2","1.3.1","1.3.0","1.2.0","1.1.0","1.0.10","1.0.9","1.0.8","1.0.7","1.0.5","1.0.4","1.0.3","1.0.2","1.0.1","1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-26042.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:H"}]}