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CVE-2023-28820

Date: April 27, 2023

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.

Language: PHP

Severity Score

Related Resources (5)

https://github.com/concretecms/concretecms
https://github.com/concretecms/concretecms/releases
https://nvd.nist.gov/vuln/detail/CVE-2023-28820
https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20
https://www.mend.io/vulnerability-database/CVE-2023-28820

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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