CVE-2020-27990
Nagios XI before 5.7.5 is vulnerable to XSS in the Deployment tool (add agent).
Nagios XI before 5.7.5 is vulnerable to XSS in the Deployment tool (add agent).
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 the Deployment tool (add agent).
- Record
CVE-2020-27990- 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 the Deployment tool (add agent).
- Record
CVE-2020-27990- Updated
- 2026-11-02
EUVDEUVD-2020-20482 No score
Nagios XI before 5.7.5 is vulnerable to XSS in the Deployment tool (add agent).
- Record
EUVD-2020-20482- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pxmr-qpfw-pj3x No score
Nagios XI before 5.7.5 is vulnerable to XSS in the Deployment tool (add agent).
Nagios XI before 5.7.5 is vulnerable to XSS in the Deployment tool (add agent).
- Record
GHSA-pxmr-qpfw-pj3x- 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-2020-27990 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 34.4%, the 98th percentile. No source names a fixed version.