What is CVE-2021-40100?

CVE-2021-40100 is a medium-severity vulnerability in Concretecms Concrete Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-24.

How severe is CVE-2021-40100?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Concretecms Concrete Cms

CVE-2021-40100

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (41.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Concretecms Concrete_cms
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Permissions Required, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-40100?: CVE-2021-40100 is a medium-severity vulnerability in Concretecms Concrete Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-24.
How severe is CVE-2021-40100?: Medium severity. CVSS v3 base score is 5.4 out of 10.