CVE-2020-27991
Nagios XI before 5.7.5 is vulnerable to XSS in Account Information (Email field).
Nagios XI before 5.7.5 is vulnerable to XSS in Account Information (Email 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 Account Information (Email field).
- Record
CVE-2020-27991- 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 Account Information (Email field).
- Record
CVE-2020-27991- Updated
- 2026-11-02
EUVDEUVD-2020-20483 No score
Nagios XI before 5.7.5 is vulnerable to XSS in Account Information (Email field).
- Record
EUVD-2020-20483- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vxgg-6fp7-rx59 No score
Nagios XI before 5.7.5 is vulnerable to XSS in Account Information (Email field).
Nagios XI before 5.7.5 is vulnerable to XSS in Account Information (Email field).
- Record
GHSA-vxgg-6fp7-rx59- 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-2020-27991 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.