CVE-2025-26042

State: Published
Severity: 6.0 Medium
Published: Mar 17, 2025
Updated: Jan 26, 2026
Reserved: Feb 7, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.0 Medium	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:H	CISA-ADP

Weaknesses

CWE-1333 Inefficient Regular Expression Complexity

Affected Products

Product	Versions
n/an/a	n/aAffected

References

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

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