Medium 6.9Published Nov 26, 2025

CVE-2025-66028OneUptime is Vulnerable to Privilege Escalation via Login Response Manipulation

Updated under an hour ago (Oct 27, 2026, 12:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for oneuptime

Exploited in the last 30 days

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.

CVSS: 6.9 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-284
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Nov 26, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

OneUptime oneuptime oneuptime:oneuptime (from the name)	before 8.0.5567	CNA record
hackerbay oneuptime hackerbay:oneuptime	before 8.0.5567	NVD

References

References

https://github.com/OneUptime/oneuptime/security/advisories/GHSA-675q-66gf-gqg8	x-refsource-confirm, exploit, vendor-advisory
https://github.com/OneUptime/oneuptime/commit/3e72b2a9a4f50f98cf1f6cf13fa3e405715bb370	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.