Oneuptime
CVE-2025-66028
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.9 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.08%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAIv1 – Mar 28, 2026
OneUptime is a solution for monitoring and managing online services. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in npm
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-284. OneUptime is a solution for monitoring and managing online services. Prior to version 8.0.5567, OneUptime is vulnerable to privilege escalation via Login Response Manipulation. During the login process, the server response included a parameter called isMasterAdmin. By intercepting and modifying this parameter value from false to true, it is possible to gain access to the admin dashboard interface. However, an attacker may be unable to view or interact with the data if they still do not have sufficient permissions. This issue has been patched in version 8.0.5567. Affected products include: Hackerbay Oneuptime. Version information: version 8.0.5567.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
OneUptime is a solution for monitoring and managing online services. Prior to version 8.0.5567, OneUptime is vulnerable to privilege escalation via Login Response Manipulation. During the login process, the server response included a parameter called isMasterAdmin. By intercepting and modifying this parameter value from false to true, it is possible to gain access to the admin dashboard interface. However, an attacker may be unable to view or interact with the data if they still do not have sufficient permissions. This issue has been patched in version 8.0.5567.
Executive ViewAI
Organizations using OneUptime should be aware of notable risk from CVE-2025-66028, a improper access control vulnerability rated CVSS 6.9. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.
Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
Affected Products (CPE)GitHub Advisory
OS command injection in OneUptime monitoring platform before 10.0.7. Authenticated users can execute arbitrary commands
OneUptime prior to 10.0.21 has a fourth vulnerability in Synthetic monitoring exposing dangerous functionality.
Code injection in OneUptime monitoring via custom JS monitor using vm module. PoC and patch available.
OneUptime monitoring platform prior to 10.0.18 allows code injection (CVSS 9.9) enabling RCE through the monitoring conf
OneUptime prior to 10.0.21 has a third authorization bypass enabling low-privileged users to access admin functions.
OneUptime prior to 10.0.20 exposes dangerous functionality in Synthetic monitoring that enables code execution.
OneUptime is a solution for monitoring and managing online services. Rated high severity (CVSS 8.8), this vulnerability
Unauthenticated path traversal in OneUptime prior to 10.0.21 lets remote attackers read arbitrary files from the server
OneUptime versions prior to 10.0.19 allow unauthenticated attackers to hijack GitHub App integrations across projects by
OneUptime is a solution for monitoring and managing online services. Rated high severity (CVSS 8.3), this vulnerability
OneUptime versions 10.0.11 and earlier contain an improper WebAuthn implementation where server-side challenge validatio
Remote command execution can be achieved by low-privileged authenticated users (ProjectMember role) in OneUptime monitor
Exploit-DB