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

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

要点

CVE-2026-7890 是影响 concrete5/concrete5, concrete cms (concretecms) 的中危 (CVSS 6.4)漏洞。
未来 30 天内被利用的概率（EPSS）：0.15%，高于 4.4% 的漏洞。
修复：升级到 9.5.1 或更高版本。

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/concrete5 的其他漏洞

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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/concrete5 的其他漏洞

查看全部 →