CVE-2025-26042

CVSS 6 MEDIUMEPSS 0.4%CWE-1333

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

17 Mar 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Uptime Kuma >== 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.

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:H

Affected products

n/a · n/a

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References

https://github.com/louislam/uptime-kuma/commit/7a9191761dbef6551c2a0aa6eed5f693ba48d688 https://github.com/louislam/uptime-kuma/issues/5574 https://github.com/louislam/uptime-kuma/pull/5573