CVE-2026-81915: Missing Authorization

Concrete CMS below 9.5.3 does not perform an object-level authorization check when a Page Type was updated. The Types::submit dashboard controller loaded and saved the Page Type identified by a user-supplied ptID without calling canEditPageType, so a signed-in dashboard user permitted to edit one...

CVE-2026-89145: Improper Neutralization of Input During Web Page Generation

Flextype CMS versions 0.9.9 through 1.0.0-alpha.3 fail to HTML-escape plugin directory names in the dependency error page rendered by getValidPluginsDependencies. Attackers with write access to the plugins directory can create a plugin with HTML characters in its name to execute arbitrary scripts...

CVE-2026-68535: Missing Authorization

Concrete CMS Area API's block-create endpoint in versions 9.2.0 to 9.5.2 did not invoke the block type controller's validate method on submitted data, which, for file-referencing blocks such as heroimage and gallery, is where the referenced file is authorized against the user's file-manager...

CVE-2026-81909: Missing Authorization

Concrete CMS 9 through 9.5.2 is vulnerable to Missing Authorization in the block alias route Process::alias in concrete/controllers/backend/block/process.php.It does not verify that the referenced block is genuinely orphaned on the target page, nor that the caller holds any permission over the...

CVE-2026-68526: Cross-Site Request Forgery (CSRF)

Concrete CMS before 9.5.3 did not validate an anti-CSRF token in the Calendar event duplicate dialog controller concrete/controllers/dialog/event/duplicate.php submit action, which duplicated a calendar event after checking only canAccess and the per-resource canAddCalendarEvent permission, so a...

PT-2026-89996

Concrete CMS 9.2.0 to 9.5.2 Express REST API list endpoint exposes restricted Express entries via Missing Authorization; the Concrete CMS REST API's Express entry collection endpoint disabled the per-entry view permission check. An OAuth token with read scope for an Express entity could enumerate...

CVE-2026-81918: Improper Neutralization of Input During Web Page Generation

Concrete CMS below 9.5.3 is vulnerable to Stored XSS via the Date Format field in the Page Attribute Display block. A user with editpagecontents permissions could store a payload which executes in the browser of any visitor who viewed a page where the block was configured to display a date-type...

CVE-2026-87727: Improper Limitation of a Pathname to a Restricted Directory

a-blog cms Ver. 3.2.33 and earlier contains a path traversal vulnerability, which allows an unauthenticated attacker to read or delete arbitrary files on the affected product...

CVE-2026-18122: Missing Authorization

Concrete CMS 9.2.0 to 9.5.2 Express REST API list endpoint exposes restricted Express entries via Missing Authorization; the Concrete CMS REST API's Express entry collection endpoint disabled the per-entry view permission check. An OAuth token with read scope for an Express entity could enumerate...

PT-2026-90151

Name of the Vulnerable Software and Affected Versions Concrete CMS versions prior to 9.5.3 Description An object-level authorization failure occurs when updating a Page Type. The Types::submit dashboard controller processes the ptID variable provided by the user to load and save a Page Type witho...

PT-2026-89999

Concrete CMS RSS Displayer block below version 9.5.3 rendered remote feed item titles without HTML escaping, resulting in stored cross-site scripting. An attacker able to control a title in a syndicated feed could execute script in the site origin for any visitor to the affected page, including...

CVE-2026-53952: Improper Authorization

GetSimple CMS is a content management system CMS, and GetSimple CMS CE is the community edition of that CMS. A logic flaw in GetSimple CMS v3.4.0a and below and GetSimpleCMS-CE v3.3.22 and below allows unauthenticated attackers to create a new administrator account. The application features an...

SUSE SLED15: libopenssl-3-devel / libopenssl-3-fips-provider / etc (SUSE-SU-2026:3835-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3835-1 advisory. OpenSSL is updated to 3.5.0 in SLE-15-SP7: jscPED-16072 Enables Post-Quantum Cryptography PQC TLS support...

CVE-2026-68528: Improper Neutralization of Input During Web Page Generation

Concrete CMS RSS Displayer block below version 9.5.3 rendered remote feed item titles without HTML escaping, resulting in stored cross-site scripting. An attacker able to control a title in a syndicated feed could execute script in the site origin for any visitor to the affected page, including...

PT-2026-90051

Concrete CMS versions 9.0.0 to 9.5.2 is vulnerable to Stored XSS in Board Custom Slot dialog. The custom slot save template endpoint authorizes the request only against the target board instance canEditBoardContents and then persists the client-supplied selectedTemplateOptioncollection verbatim,...

CVE-2026-81911: Improper Neutralization of Input During Web Page Generation

Concrete CMS versions 9.0.0 to 9.5.2 is vulnerable to Stored XSS in Board Custom Slot dialog. The customslot savetemplate endpoint authorizes the request only against the target board instance canEditBoardContents and then persists the client-supplied selectedTemplateOptioncollection verbatim,...

CVE-2026-81906: Authentication Bypass Using an Alternate Path or Channel

Concrete CMS OAuth callback login path prior to version 9.5.3 did not check whether an account was active or email-validated before establishing a session. A deactivated or unvalidated user with an existing OAuth binding could complete authentication and receive a session that was fully...

CVE-2026-81912: Cross-Site Request Forgery (CSRF)

Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery in the Move Multiple Groups feature. The dashboard/users/groups/bulkupdate/confirm endpoint moved the selected group tree nodes without validating an action token, so a state-changing group move could be processed for an...

PT-2026-90149

Name of the Vulnerable Software and Affected Versions Concrete CMS versions prior to 9.5.3 Description Cross-Site Request Forgery CSRF exists in the Move Multiple Groups feature. The endpoint 'dashboard/users/groups/bulkupdate/confirm' allows moving selected group tree nodes without validating an...

CVE-2026-18121: Missing Authorization

Concrete CMS 9.5.2 and below is vulnerable to an authorization bypass IDOR because the frontend calendar lightbox endpoint /ccm/calendar/viewevent/bID/occurrenceid does not verify that the caller is permitted to view the calendar that owns the requested event occurrence. The controller loads the...