Stored cross site scripting in RSS displayer

MEDIO 5.4CVE-2023-28820 · GHSA-fgxj-g7x3-85cq · Published 28/04/2023 · updated 17/06/2026

En resumen

CVE-2023-28820 es una vulnerabilidad MEDIO (CVSS 5.4) que afecta a concrete5/concrete5, concrete cms (concretecms).
Probabilidad de explotación en los próximos 30 días (EPSS): 0.39%, mayor que el 33.5% de las vulnerabilidades.
Solución: actualizar a 9.1.0 o posterior.

Package	Affected versions	Patched versions
concrete5/concrete5 Packagist	`< 9.1.0`	`9.1.0`
concrete cms concretecms	`< 9.1.0`	`9.1.0`

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.

NVD 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.

References

nvd.nist.gov/vuln/detail/CVE-2023-28820 · ADVISORY
concretecms/concretecms · PACKAGE
concretecms/concretecms release · WEB
concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20 · WEB

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Package

Affected versions

Patched versions

concrete5/concrete5

Packagist

< 9.1.0

9.1.0

concrete cms

concretecms

< 9.1.0

9.1.0

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.

NVD 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.

Más vulnerabilidades de concrete5/concrete5

Ver todo →