CVE-2026-81905: Incorrect Authorization

Concrete CMS below 9.5.3 stores user validation hashes for multiple purposes email/registration validation, password reset, and persistent login in a single table with a type column, but the redemption path resolves a hash by value alone and does not verify its type. As a result, a hash issued fo...

CVE-2026-81910: Improper Neutralization of Special Elements Used in a Template Engine

Concrete CMS 9 through 9.5.2 is vulnerable to Server-Side Template Injection SSTI in Theme Customizer via Unvalidated Style Values. Values submitted through the customizer color channels and other style properties handled by ColorStyle and sibling Style classes such as FontFamilyStyle and...

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-2026-81918: 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-2026-68526: 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...

CVE-2026-81908: Missing Authorization

Concrete CMS 9.2.0 to 9.5.2 contain a missing authorization vulnerability in the REST API Groups list endpoint. The listGroups method in concrete/src/Api/Controller/Groups.php registers a permissions checker callback that unconditionally returns true, so no per-object tree node authorization is...

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...

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-2026-81906: 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-2026-81907: Cross-Site Request Forgery (CSRF)

Concrete CMS 9.5.2 and below is vulnerable to Cross-Site Request Forgery CSRF in the Express "Clear Entries" function POST /index.php/dashboard/system/express/entities/deleteentries because the controller records but does not enforce a failed CSRF token check, allowing the destructive operation t...

PT-2026-90496

Name of the Vulnerable Software and Affected Versions Concrete CMS versions prior to 9.5.3 Description Cross-Site Request Forgery CSRF occurs in the Express Clear Entries function. The issue exists because the controller records a failed CSRF token check but does not enforce it, allowing...

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...

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-2026-81913: URL Redirection to Untrusted Site

Concrete CMS versions 9.5.0 through 9.5.2 are vulnerable to Open Redirect via the rcURL parameter. An attacker can craft a single link on the site's own domain that sends a user to an arbitrary external site immediately after authentication, facilitating phishing and credential theft. The same...

PT-2026-90050

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...

CVE-2026-81916: Missing Authorization

Concrete CMS before 9.5.3 evaluated the authorization check for an Express entry submission against the entity of the posted form rather than the entity identified by the dashboard route. As a result, a user permitted to add entries to one Express object could create entries in a different Expres...

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-2026-81917: Improper Neutralization of Input During Web Page Generation

Concrete CMS below 9.5.3 does not apply HTML output escaping to the file description and tags fields when rendering the Document Library block, so a user with permission to edit file properties could store a script payload that executed in the browser of any visitor to a page displaying the block...

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-2026-81906

Concrete CMS prior to version 9.5.3 is affected by an OAuth callback login flaw. The vulnerable component is the OAuth callback login path , which failed to verify whether an account was active or email-validated before establishing a session. As a result, a deactivated or unvalidated user with a...