XSS in Nagios Fusion
CVE-2020-28903
Improper input validation in Nagios Fusion 4.1.8 and earlier allows a remote attacker with control over a fused server to inject arbitrary HTML, aka XSS.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.101 (95.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 95th percentile — 95.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.101 · newest: 0.101 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.nagios.com/downloads/nagios-xi/change-log/ (Release Notes, Vendor Advisory)
- skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you/ (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cros… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-28903?
- CVE-2020-28903 is a medium-severity vulnerability in Nagios Fusion, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-24.
- How severe is CVE-2020-28903?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-28903 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.