Vulnerability · Published Mar 17, 2025 · Assigned by mitre
CVE-2025-26042
Medium 6.0
In plain English
A medium-severity regular-expression denial of service in the uptime-kuma package (npm). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.0Medium
Exploit odds (30 days)0.4%top 65.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | uptime-kuma | no fix listed | GHSA-hx7h-9vf7-5xhg |
| npm | uptime-kuma | 2.0.0-beta.2 | GHSA-hx7h-9vf7-5xhg |
Affected products (as reported)
Weakness: CWE-1333 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:H