CVE-2025-26042

Published Mar 17, 2025 CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-6495 Uptime Kuma's Regular Expression in pushdeeer and whapi file Leads to ReDoS Vulnerability Due to Catastrophic Backtracking
Github GHSA Github GHSA GHSA-hx7h-9vf7-5xhg Uptime Kuma's Regular Expression in pushdeeer and whapi file Leads to ReDoS Vulnerability Due to Catastrophic Backtracking
History
Type Values Removed Values Added
Weaknesses CWE-1333
Metrics cvssV3_1

{'score': 6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jan 26, 2026, 3:56 PM
Reserved
Feb 7, 2025, 12:00 AM
Status
Deferred
Published
Mar 17, 2025, 7:15 PM
Modified
Jun 17, 2026, 9:01 AM