CVE-2020-27988
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
- Record
CVE-2020-27988- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
- Record
CVE-2020-27988- Updated
- 2026-11-02
EUVDEUVD-2020-20480 No score
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
- Record
EUVD-2020-20480- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v9r7-v567-9p2v No score
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
- Record
GHSA-v9r7-v567-9p2v- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-27988 is a medium vulnerability (CVSS 5.4) in Nagios Xi, published November 16, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 90.4%, the 99th percentile. No source names a fixed version.