CVE-2025-66028
moderate-risk
Published 2025-11-26
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.
Do I need to act?
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0.08% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.2/10
High
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
33
/ 100
moderate-risk
Severity
28/34 · Critical
Exploitability
0/34 · Minimal
Exposure
5/34 · Minimal