VulnerabilityModified
CVE-2020-27988
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
MEDIUM 5.4EPSS 91.3%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 91.3%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
Nagios XI before 5.7.5 is vulnerable to XSS in Manage Users (Username field).
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 91.31% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- nagios/nagios xi
- Source
- cve@mitre.org
EPSS 91.3% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.