CVE-2020-22839

Name: CVE-2020-22839
Creator: NVD / NIST
Published: 2021-02-09T20:15:12.94+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 4.52%

Last modified Jun 17, 2026

CVE-2020-22839 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Reflected cross-site scripting vulnerability (XSS) in the evoadm.php file in b2evolution cms version 6.11.6-stable allows remote attackers to inject arbitrary webscript or HTML code via the tab3 parameter.. EPSS estimates a 4.52% chance of exploitation in the next 30 days.

Description

Reflected cross-site scripting vulnerability (XSS) in the evoadm.php file in b2evolution cms version 6.11.6-stable allows remote attackers to inject arbitrary webscript or HTML code via the tab3 parameter.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

4.52%

90.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
B2evolution	B2evolution Cms	6.11.6

References

http://packetstormsecurity.com/files/161363/b2evolution-CMS-6.11.6-Cross-Site-Scripting.htmlExploit, Third Party Advisory
https://sohambakore.medium.com/b2evolution-cms-reflected-xss-in-tab-type-parameter-in-evoadm-php-38886216cdd3Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/49555Exploit, Third Party Advisory
http://packetstormsecurity.com/files/161363/b2evolution-CMS-6.11.6-Cross-Site-Scripting.htmlExploit, Third Party Advisory
https://sohambakore.medium.com/b2evolution-cms-reflected-xss-in-tab-type-parameter-in-evoadm-php-38886216cdd3Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/49555Exploit, Third Party Advisory

Timeline

Published: Feb 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-22839?

How severe is CVE-2020-22839?

CVE-2020-22839 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 4.52% probability of exploitation in the next 30 days.

How do I fix CVE-2020-22839?

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-2020-22839?

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

Scan your code now

Source: NVD / NIST