CVE-2025-66028: oneuptime Access Control Flaw — Exploit

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.

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CVSS v3.1 Score

8.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Weakness Type (CWE)

CWE-284 CWE-284

Affected Products

Vendor	Product	Versions
hackerbay	oneuptime	< 8.0.5567

References

Advisories & Patches

https://github.com/OneUptime/oneuptime/commit/3e72b2a9a4f50f98cf1f6cf13fa3e405715bb370 https://github.com/OneUptime/oneuptime/security/advisories/GHSA-675q-66gf-gqg8

Exploits

https://github.com/OneUptime/oneuptime/security/advisories/GHSA-675q-66gf-gqg8

Frequently Asked Questions

What is CVE-2025-66028? +

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. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2025-66028? +

CVE-2025-66028 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-66028? +

CVE-2025-66028 affects products from hackerbay, specifically: oneuptime. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66028? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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