CVE-2025-66028

High

Description

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.

SeverityHigh
CVSS8.2
Exploit probability—
ProductHackerbay Oneuptime
PublishedNov 26, 2025
First seenNov 26, 2025

How to fix

Update
  • hackerbay oneuptime8.0.5567 or later
  • @oneuptime/common8.0.5567 or later

Affected products

ProductAffected versionsFixed in
hackerbay oneuptimev < 8.0.55678.0.5567
@oneuptime/commonnpmv < 8.0.55678.0.5567

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