Low severity2.0NVD Advisory· Published Apr 28, 2023· Updated Jun 17, 2026
CVE-2023-28820
CVE-2023-28820
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
concrete5/concrete5Packagist | < 9.1.0 | 9.1.0 |
Affected products
3- Concrete CMS/Concrete CMSdescription
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-fgxj-g7x3-85cqghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-28820ghsaADVISORY
- www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20nvdVendor AdvisoryWEB
- github.com/concretecms/concretecms/releasesnvdRelease NotesWEB
News mentions
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