CVE-2020-9389

Name: CVE-2020-9389
Creator: NVD / NIST
Published: 2021-02-03T20:15:13.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.7/10EPSS 0.93%

Last modified Jun 17, 2026

CVE-2020-9389 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. A username enumeration issue was discovered in SquaredUp before version 4.6.0. The login functionality was implemented in a way that would enable a malicious user to guess valid username due to a different response time from invalid usernames.. EPSS estimates a 0.93% chance of exploitation in the next 30 days.

Description

A username enumeration issue was discovered in SquaredUp before version 4.6.0. The login functionality was implemented in a way that would enable a malicious user to guess valid username due to a different response time from invalid usernames.

Metrics

CVSS 3.1

3.7/10

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

EPSS Probability

0.93%

56.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-203

Affected Software

Vendor	Product	Versions
Squaredup	Squaredup	<= 4.6

References

https://support.squaredup.com/hc/en-us/articles/360017255858Broken Link, Vendor Advisory
https://support.squaredup.com/hc/en-us/articles/360019427238-CVE-2020-9389-Username-enumeration-possible-via-a-timing-attackBroken Link, Vendor Advisory
https://support.squaredup.com/hc/en-us/articles/360017255858Broken Link, Vendor Advisory
https://support.squaredup.com/hc/en-us/articles/360019427238-CVE-2020-9389-Username-enumeration-possible-via-a-timing-attackBroken Link, Vendor Advisory

Timeline

Published: Feb 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9389?

How severe is CVE-2020-9389?

CVE-2020-9389 has a CVSS score of 3.7/10 (LOW severity). The EPSS model estimates a 0.93% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9389?

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-2020-9389?

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

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Source: NVD / NIST