CVE-2021-40100

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

An issue was discovered in Concrete CMS through 8.5.5. Stored XSS can occur in Conversations when the Active Conversation Editor is set to Rich Text.

References

https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes

https://hackerone.com/reports/616770

Details

Source: MITRE

Published: 2021-09-24

Updated: 2021-09-30

Type: CWE-79

Risk Information

CVSS v2

Base Score: 3.5

Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 6.8

Severity: LOW

CVSS v3

Base Score: 5.4

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

Impact Score: 2.7

Exploitability Score: 2.3

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* versions up to 8.5.5 (inclusive)