CVE-2020-21246

Name: CVE-2020-21246
Creator: NVD / NIST
Published: 2023-06-20T15:15:11.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2020-21246 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Cross Site Scripting vulnerability in YiiCMS v.1.0 allows a remote attacker to execute arbitrary code via the news function.. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

Cross Site Scripting vulnerability in YiiCMS v.1.0 allows a remote attacker to execute arbitrary code via the news function.

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

0.55%

42.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Yiicms Project	Yiicms	1.0

References

https://github.com/yongshengli/yiicms/issues/6Exploit, Issue Tracking, Patch
https://github.com/yongshengli/yiicms/issues/6Exploit, Issue Tracking, Patch

Timeline

Published: Jun 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-21246?

Cross Site Scripting vulnerability in YiiCMS v.1.0 allows a remote attacker to execute arbitrary code via the news function.

How severe is CVE-2020-21246?

CVE-2020-21246 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2020-21246?

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-2020-21246?

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

Scan your code now

Source: NVD / NIST