CVE-2020-21930

Name: CVE-2020-21930
Creator: NVD / NIST
Published: 2021-08-10T22:15:07.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2020-21930 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A stored cross site scripting (XSS) vulnerability in the web_attr_2 field of Eyoucms v1.4.1 allows authenticated attackers to execute arbitrary web scripts or HTML.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

A stored cross site scripting (XSS) vulnerability in the web_attr_2 field of Eyoucms v1.4.1 allows authenticated attackers to execute arbitrary web scripts or HTML.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.50%

38.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Eyoucms	Eyoucms	1.4.1

References

https://github.com/eyoucms/eyoucms/issues/9Exploit, Issue Tracking, Third Party Advisory
https://github.com/eyoucms/eyoucms/issues/9Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Aug 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-21930?

A stored cross site scripting (XSS) vulnerability in the web_attr_2 field of Eyoucms v1.4.1 allows authenticated attackers to execute arbitrary web scripts or HTML.

How severe is CVE-2020-21930?

CVE-2020-21930 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2020-21930?

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-2020-21930?

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

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Source: NVD / NIST