CVE-2020-5901

9.6 criticalEPSS 1.5%

Critical (9.6) in f5 nginx controller. EPSS 1.5% chance of exploitation in the next 30 days.

In NGINX Controller 3.3.0-3.4.0, undisclosed API endpoints may allow for a reflected Cross Site Scripting (XSS) attack. If the victim user is logged in as admin this could result in a complete compromise of the system.

Severity

CVSS 3.1

9.6 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS: 1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2020-07-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

f5:nginx_controller

References

https://support.f5.com/csp/article/K43520321
https://support.f5.com/csp/article/K43520321

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