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Subrion CMS

Open-source PHP content management system

Content Management Systems ★ 284 stars Medium setup GPL-3.0

Subrion is a full-featured PHP and MySQL content management system with a drag-and-drop layout editor and an extensible plugin and template marketplace. It targets blogs, business sites, and directory-style portals.

Official siteSource code

Key features

  • Drag-and-drop layouts
  • Plugin marketplace
  • Multi-language support
  • Built-in SEO tools

Strengths

  • Released under the GPL-3.0 license
  • Written in PHP
  • Tiny footprint — runs in 256 MB RAM

Is Subrion CMS secure?

21 known vulnerabilities affect Subrion CMS's latest release (v4.2.1) according to OSV.dev; the most severe is rated high.

Affecting v4.2.1

AdvisorySeveritySummary
CVE-2019-7357HighSubrion CMS 4.2.1 has CSRF in panel/modules/plugins/.
CVE-2020-18326HighCross Site Request Forgery (CSRF) vulnerability exists in Intelliants Subrion CMS v4.2.1 via the Members administrator function, which could let a remote unauthenticated malicious user send an auth...
CVE-2021-43464HighA Remiote Code Execution (RCE) vulnerability exiss in Subrion CMS 4.2.1 via modified code in a background field; when the information is modified, the data in it will be executed through eval().
CVE-2018-19422High/panel/uploads in Subrion CMS 4.2.1 allows remote attackers to execute arbitrary PHP code via a .pht or .phar file, because the .htaccess file omits these.
CVE-2021-41947HighA SQL injection vulnerability exists in Subrion CMS v4.2.1 in the visual-mode.
CVE-2026-71292HighSubrion CMS Admin Grid SQL Injection via Unwhitelisted ORDER BY sort Parameter
CVE-2019-11406MediumSubrion CMS 4.2.1 allows _core/en/contacts/ XSS via the name, email, or phone parameter.
CVE-2020-18324MediumCross Site Scripting (XSS) vulnerability exists in Subrion CMS 4.2.1 via the q parameter in the Kickstart template.
CVE-2020-18325MediumMultilple Cross Site Scripting (XSS) vulnerability exists in Intelliants Subrion CMS v4.2.1 in the Configuration panel.
CVE-2020-35437MediumSubrion CMS 4.2.1 is affected by: Cross Site Scripting (XSS) through the avatar[path] parameter in a POST request to the /_core/profile/ URI.

Showing 10 of 21.

21 unconfirmed matches

OSV.dev links these advisories to this release, but their own version data doesn't confirm it: they cover a separately versioned sub-package of the repository, or record the fix only as a commit. They are listed for completeness and not counted in the health score.

Matched by OSV, not confirmed

AdvisorySeveritySummary
CVE-2020-18155CriticalSQL Injection vulnerability in Subrion CMS v4.2.1 in the search page if a website uses a PDO connection.
CVE-2024-25400CriticalSubrion CMS 4.2.1 is vulnerable to SQL Injection via ia.core.mysqli.php.
CVE-2023-46947HighSubrion 4.2.1 has a remote command execution vulnerability in the backend.
CVE-2019-20390HighA Cross-Site Request Forgery (CSRF) vulnerability was discovered in Subrion CMS 4.2.1 that allows a remote attacker to remove files on the server without a victim's knowledge, by enticing an authen...
CVE-2020-12468HighSubrion CMS 4.2.1 allows CSV injection via a phrase value within a language.
CVE-2018-14836MediumSubrion 4.2.1 is vulnerable to Improper Access control because user groups not having access to the Admin panel are able to access it (but not perform actions) if the Guests user group has access t...
CVE-2020-12467MediumSubrion CMS 4.2.1 allows session fixation via an alphanumeric value in a session cookie.
CVE-2020-12469Mediumadmin/blocks.php in Subrion CMS through 4.2.1 allows PHP Object Injection (with resultant file deletion) via serialized data in the subpages value within a block to blocks/edit.
CVE-2018-14840Mediumuploads/.htaccess in Subrion CMS 4.2.1 allows XSS because it does not block .html file uploads (but does block, for example, .htm file uploads).
CVE-2018-15563Medium_core/admin/pages/add/ in Subrion CMS 4.2.1 has XSS via the titles[en] parameter.

Showing 10 of 21.

  • Most recent fixed advisory CVE-2026-72604, published 2026-08-11 (64 days ago), fixed in 4.2.1

Source: OSV.dev, checked 2026-10-14. How this is measured.

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