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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
2 LOW
NETWORK
HIGH
HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N
mitreCNA
2 LOW
NETWORK
HIGH
HIGH
CVSS:3.1/AC:H/AV:N/A:N/C:L/I:N/PR:H/S:U/UI:R
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 64%
VendorProductVersion
concretecmsconcrete_cms
𝑥
< 9.1.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/concretecms/concretecms/releases
https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20
https://github.com/concretecms/concretecms/releases
https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20