Concretecms: >> Concrete Cms >> 8.5.20 Security Vulnerabilities
Concrete CMS 9 to 9.4.2 and versions below 8.5.21 are vulnerable to Reflected Cross-Site Scripting (XSS) in the Conversation Messages Dashboard Page. Unsanitized input could cause theft of session cookies or tokens, defacement of web content, redirection to malicious sites, and (if victim is an admin), the execution of unauthorized actions. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Fortbridge https://fortbridge.co.uk/ for performing a penetration test and vulnerability assessment on Concrete CMS and reporting this issue.
CVSS Score
4.8
EPSS Score
0.001
Published
2025-08-05
Concrete CMS (previously concrete5) in versions 9.0 through 9.1.3 is vulnerable to Stored XSS via a container name.
CVSS Score
5.4
EPSS Score
0.01
Published
2023-04-28
Concrete CMS (previously concrete5) versions 8.5.12 and below, and 9.0 through 9.1.3 does not have Secure and HTTP only attributes set for ccmPoll cookies.
CVSS Score
5.3
EPSS Score
0.003
Published
2023-04-28
Concrete CMS (previously concrete5) versions 8.5.12 and below, and 9.0 through 9.1.3 is vulnerable to possible Auth bypass in the jobs section.
CVSS Score
3.3
EPSS Score
0.001
Published
2023-04-28
Concrete CMS (previously concrete5) in versions 9.0 through 9.1.3 is vulnerable to Stored XSS on Saved Presets on search.
CVSS Score
5.4
EPSS Score
0.01
Published
2023-04-28
Concrete CMS (previously concrete5) versions 8.5.12 and below, and versions 9.0 through 9.1.3 is vulnerable to Reflected XSS on the Reply form because msgID was not sanitized.
CVSS Score
6.1
EPSS Score
0.011
Published
2023-04-28
Concrete CMS (previously concrete5) in versions 9.0 through 9.1.3 is vulnerable to Stored XSS on Tags on uploaded files.
CVSS Score
5.4
EPSS Score
0.01
Published
2023-04-28
Concrete CMS (previously concrete5) versions 8.5.12 and below, and 9.0 through 9.1.3 is vulnerable to stored XSS on API Integrations via the name parameter.
CVSS Score
5.5
EPSS Score
0.007
Published
2023-04-28
Concrete CMS (previously concrete5) versions 8.5.12 and below, 9.0.0 through 9.0.2 is vulnerable to Stored XSS in uploaded file and folder names.
CVSS Score
3.5
EPSS Score
0.018
Published
2023-04-28
Concrete CMS (previously concrete5) before 9.1 is vulnerable to stored XSS in RSS Displayer via the href attribute because the link element input was not sanitized.
CVSS Score
2.0
EPSS Score
0.005
Published
2023-04-28
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