CVE-2020-28903
MEDIUMCVSS 6.1/10EPSS 10.10%
Last modified
CVE-2020-28903 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 10.10% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nagios | Fusion | <= 4.1.8 |
References
- http://packetstormsecurity.com/files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cross-Site-Scripting-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you/Exploit, Third Party Advisory
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
- http://packetstormsecurity.com/files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cross-Site-Scripting-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you/Exploit, Third Party Advisory
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2020-28903?
CVE-2020-28903 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 10.10% probability of exploitation in the next 30 days.
How do I fix CVE-2020-28903?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-28903?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST