Kirby CMS vulnerable to cross-site scripting (XSS) from links in KirbyTags and image blocks in the site frontend

TL;DR This vulnerability affects all Kirby sites that allow the use of the link: … KirbyTag, the link: parameter of the image: … KirbyTag, the built-in image block with a link or the HTML importer for blocks, when content is authored by users who may not be fully trusted. The attack requires an...

Kirby CMS's content locks disclose IDs and emails of inaccessible users from `users.access/list` permissions

TL;DR This vulnerability affects all Kirby sites that restrict the visibility of users for certain roles via the users.access or users.list permissions. A site is affected if users of a particular role are not allowed to see other users in the Panel, for example because the role's blueprint sets...

GHSA-39VQ-49QM-R2MC Kirby CMS's content locks disclose IDs and emails of inaccessible users from `users.access/list` permissions

TL;DR This vulnerability affects all Kirby sites that restrict the visibility of users for certain roles via the users.access or users.list permissions. A site is affected if users of a particular role are not allowed to see other users in the Panel, for example because the role's blueprint sets...

CVE-2026-42069

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, read access to site, user and role information is not gated by permissions. This issue has been patched in versions 4.9.0 and 5.4.0...

CVE-2026-42137

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, pages.access/list and files.access/list permissions are not consistently checked in the Panel and REST API. This issue has been patched in versions 4.9.0 and 5.4.0...

CVE-2026-42174

Kirby CMS (CVE-2026-42174) is vulnerable prior to updates 4.9.0 and 5.4.0: user avatars could be created, replaced, or deleted without proper user.update/users.update permission checks. The root cause is missing authorization gating for avatar actions, allowing users with only file permissions to...

CVE-2026-42069 Kirby: Read access to site, user and role information is not gated by permissions

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, read access to site, user and role information is not gated by permissions. This issue has been patched in versions 4.9.0 and 5.4.0...

Kirby 安全漏洞

Kirby is a set of open-source content management systems based on files. Versions of Kirby prior to 4.9.0 and 5.4.0 have security vulnerabilities. These vulnerabilities stem from insufficient checks for consistency in permissions for functions like Panel and REST API’s pages.access/list and...

Kirby 安全漏洞

Kirby is a set of open-source content management systems based on files. Versions of Kirby prior to 4.9.0 and 5.4.0 have security vulnerabilities. These vulnerabilities stem from the system’s API endpoints leaking license data and installed versions to authenticated users...

Improper Neutralization of Special Elements Used in a Template Engine

Overview Affected versions of this package are vulnerable to Improper Neutralization of Special Elements Used in a Template Engine via the Option::render and Options::factory code paths in the Option, Options, OptionsApi, and OptionsQuery classes. An attacker can inject template/query syntax into...

CVE-2026-40099

Kirby is an open-source content management system. Kirby's user permissions control which user role is allowed to perform specific actions to content models in the CMS. These permissions are defined for each role in the user blueprint site/blueprints/users/.... It is also possible to customize th...

CVE-2026-41325 Kirby is vulnerable to authorization bypass during page, file and user creation via blueprint injection

Kirby is an open-source content management system. Kirby's user permissions control which user role is allowed to perform specific actions to content models in the CMS. These permissions are defined for each role in the user blueprint site/blueprints/users/.... It is also possible to customize th...

EUVD-2026-25371

Kirby is an open-source content management system. Kirby's user permissions control which user role is allowed to perform specific actions to content models in the CMS. These permissions are defined for each role in the user blueprint site/blueprints/users/.... It is also possible to customize th...

CVE-2026-40099

Kirby’s page creation API vulnerability allowed authenticated users with pages.create permission but without pages.changeStatus to create published pages by overriding isDraft via REST API. This bypassed normal editorial workflow (new pages are drafts by default) until patches in Kirby 4.9.0 and ...

CVE-2026-34587

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, Kirby's user permissions control which user role is allowed to perform specific actions to content models in the CMS. These permissions are defined for each role in the user blueprint site/blueprints/users/.... ...

EUVD-2026-25368

Kirby is an open-source content management system. Kirby's Xml::value method has special handling for blocks. If the input value is already valid CDATA, it is not escaped a second time but allowed to pass through. However, prior to versions 4.9.0 and 5.4.0, it was possible to trick this check int...

Kirby 安全漏洞

Kirby is a set of open-source content management systems based on files. Versions prior to Kirby 4.9.0 and 5.4.0 have security vulnerabilities. These vulnerabilities stem from improper handling of CDATA blocks by the Xml::value method, which may allow structured data outside of valid CDATA blocks...

CVE-2026-29905

Kirby CMS (version 5.1.4 and earlier) is affected. An authenticated user with Editor permissions can trigger a persistent DoS by uploading a malformed image; PHP getimagesize() may return false, leading to a fatal TypeError during metadata/thumbnail processing and HTTP 500s. Public details in con...

CVE-2026-21896

Kirby is an open-source content management system. From versions 5.0.0 to 5.2.1, Kirby is missing permission checks in the content changes API. This vulnerability affects all Kirby sites where user permissions are configured to prevent specific roles from performing write actions, specifically by...

CVE-2026-21896

Kirby (CMS) versions 5.0.0–5.2.1 contain missing permission checks in the content changes API. This allows attackers with Panel access to manipulate the changes version or content fields, potentially creating editing locks, injecting content, or discarding edits across any model, when user permis...