CVE-2020-5901

Name: CVE-2020-5901
Creator: NVD / NIST
Published: 2020-07-01T15:15:15.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 1.47%

Last modified Jun 17, 2026

CVE-2020-5901 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. 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.. EPSS estimates a 1.47% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.6/10

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

EPSS Probability

1.47%

70.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
F5	Nginx Controller	>= 3.3.0, <= 3.4.0

References

https://support.f5.com/csp/article/K43520321Vendor Advisory
https://support.f5.com/csp/article/K43520321Vendor Advisory

Timeline

Published: Jul 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5901?

How severe is CVE-2020-5901?

CVE-2020-5901 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 1.47% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5901?

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.

Are you affected by CVE-2020-5901?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST