CVE-2020-8789

Name: CVE-2020-8789
Creator: NVD / NIST
Published: 2020-05-22T14:15:12.403+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2020-8789 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Composr 10.0.30 allows Persistent XSS via a Usergroup name under the Security configuration.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

Composr 10.0.30 allows Persistent XSS via a Usergroup name under the Security configuration.

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

0.65%

46.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Composr Project	Composr	<= 10.0.30

References

http://packetstormsecurity.com/files/157787/Composr-CMS-10.0.30-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/May/39Exploit, Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/157787/Composr-CMS-10.0.30-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/May/39Exploit, Mailing List, Third Party Advisory

Timeline

Published: May 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8789?

Composr 10.0.30 allows Persistent XSS via a Usergroup name under the Security configuration.

How severe is CVE-2020-8789?

CVE-2020-8789 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8789?

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-2020-8789?

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

Scan your code now

Source: NVD / NIST