Vulnerability Details : CVE-2023-28820
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.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2023-28820
- cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-28820
0.50%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 65 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-28820
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.0
|
LOW | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N |
0.5
|
1.4
|
MITRE | |
|
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST |
CWE ids for CVE-2023-28820
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2023-28820
-
https://github.com/concretecms/concretecms/releases
Releases · concretecms/concretecms · GitHubRelease Notes
-
https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20
Concrete CMS Security Advisory 2023-04-20Vendor Advisory
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