Concrete CMS's RSS Displayer block accepts a feed URL from any page editor and fetches it server-side without validation

보통 6.4CVE-2026-7890 · GHSA-gjwq-9v8p-47w7 · Published 21/05/2026 · updated 23/07/2026

요약

CVE-2026-7890은(는) concrete5/concrete5, concrete cms (concretecms)에 영향을 주는 보통 (CVSS 6.4) 취약점입니다.
향후 30일 내 악용 확률(EPSS): 0.15%, 전체 취약점의 4.4%보다 높음.
조치: 9.5.1 이상으로 업데이트하세요.

Package	Affected versions	Patched versions
concrete5/concrete5 Packagist	`< 9.5.1`	`9.5.1`
concrete cms concretecms	`< 9.5.1`	`9.5.1`

Description

In Concrete CMS 9.5.0 and below, the RSS Displayer block accepts a feed URL from any page editor and fetches it server-side without validation enabling redirect-to-internal bypasses.

NVD description

In Concrete CMS 9.5.0 and below, the RSS Displayer block accepts a feed URL from any page editor and fetches it server-side without validation enabling redirect-to-internal bypasses. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.1 with a vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N.

References

nvd.nist.gov/vuln/detail/CVE-2026-7890 · ADVISORY
documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes · WEB
concretecms/concretecms · PACKAGE

concrete5/concrete5의 다른 취약점

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Package

Affected versions

Patched versions

concrete5/concrete5

Packagist

< 9.5.1

9.5.1

concrete cms

concretecms

< 9.5.1

9.5.1

Description

In Concrete CMS 9.5.0 and below, the RSS Displayer block accepts a feed URL from any page editor and fetches it server-side without validation enabling redirect-to-internal bypasses.

NVD description

concrete5/concrete5의 다른 취약점

모두 보기 →