Priority LOW 28
Concrete CMS before 9.5.3 exposed a legacy Express entry search endpoint that returned entry result JSON without invoking the canViewExpressEntries() permission check applied by the normal dashboard and CSV Export flow.
CVSS 4.0MEDIUM 6.3· Network · No auth · No interaction · EPSS 0.00351 · Published 2026-09-16 · No fix listed CWE-862
Priority LOW 10
Concrete CMS before 9.5.4 re-authorized OAuth REST API requests from the bearer token alone and did not re-check the state of the account the token had been issued to.
CVSS 4.0LOW 2.0· Network · Low privileges · User interaction · EPSS 0.00261 · Published 2026-09-16 · No fix listed CWE-613
Priority LOW 11
n Concrete CMS 9.2.0 through 9.5.3, the REST API user creation endpoint (POST /ccm/api/1.0/users, the add() method of concrete/src/Api/Controller/Users.php) did not perform a permission check before creating an account.
CVSS 4.0LOW 2.1· Network · High privileges · No interaction · EPSS 0.00336 · Published 2026-09-16 · No fix listed CWE-862
Priority LOW 24
Concrete CMS 9 through 9.5.3 did not confirm that a board InstanceItem submitted to the custom-slot preview endpoint belonged to the board instance the requesting user was authorized to edit, and did not enforce page-vie…
CVSS 4.0MEDIUM 5.3· Network · Low privileges · No interaction · EPSS 0.00375 · Published 2026-09-16 · No fix listed CWE-862
Priority LOW 34
Concrete CMS before 9.5.4 did not sanitize XML and XSLT documents uploaded through a public Form Block file-upload question.
CVSS 4.0HIGH 7.3· Network · Low privileges · User interaction · EPSS 0.00236 · Published 2026-09-16 · No fix listed CWE-79
Priority LOW 36
Concrete CMS below 9.5.4 did not validate the user timezone value (uTimezone) on write and rendered it without output encoding on the Dashboard user management page, where Date::getTimezoneDisplayName() returns any non-I…
CVSS 4.0HIGH 7.7· Network · No auth · User interaction · EPSS 0.00502 · Published 2026-09-16 · No fix listed CWE-79
Priority LOW 10
Concrete CMS before 9.5.3 contained a stored cross-site scripting vulnerability in SVG file handling.
CVSS 4.0LOW 1.8· Network · High privileges · User interaction · EPSS 0.00237 · Published 2026-09-15 · No fix listed CWE-79
Priority LOW 11
Concrete CMS 9.0.0 through 9.5.2 did not enforce a block-level edit-permission check on the Express Form block's control-management actions, which relied solely on CSRF token validation.
CVSS 4.0LOW 2.0· Network · High privileges · User interaction · EPSS 0.0029 · Published 2026-09-15 · No fix listed CWE-862
Priority LOW 10
Concrete CMS 9.4.0 through 9.5.2 did not escape colliding page paths before rendering them in the location panel's duplicate-path confirmation dialog.
CVSS 4.0LOW 2.0· Network · High privileges · User interaction · EPSS 0.00256 · Published 2026-09-15 · No fix listed CWE-79
Priority LOW 11
Concrete CMS before 9.5.3 improperly neutralized a user-supplied custom date format when rendering conversation messages, resulting in reflected cross-site scripting.
CVSS 4.0LOW 2.1· Network · Low privileges · User interaction · EPSS 0.00273 · Published 2026-09-15 · No fix listed CWE-79
Priority LOW 10
Concrete CMS 9 before 9.5.3 authorized the dashboard sitemap reorder action (Concrete\Controller\Backend\Dashboard\SitemapUpdate) using only the global access_sitemap task permission and did not check per-page edit permi…
CVSS 4.0LOW 2.1· Network · High privileges · No interaction · EPSS 0.00159 · Published 2026-09-15 · No fix listed CWE-352
Priority LOW 11
Concrete CMS 9.0.0 to 9.5.2 is vulnerable to Server-Side Request Forgery iremote file import via cross-port reuse of a host's validated DNS pin.
CVSS 4.0LOW 2.1· Network · High privileges · No interaction · EPSS 0.00248 · Published 2026-09-15 · No fix listed CWE-918
Priority LOW 11
Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference (IDOR) in the Express saved search preset delete and edit dialogs .
CVSS 4.0LOW 2.1· Network · High privileges · No interaction · EPSS 0.0035 · Published 2026-09-15 · No fix listed CWE-639
Priority LOW 12
Concrete CMS before 9.5.3 did not enforce a destination-side authorization check and did not validate a CSRF token in the multilingual page assignment backend action (Backend\Page\Multilingual::assign).
CVSS 4.0LOW 2.1· Network · High privileges · No interaction · EPSS 0.00475 · Published 2026-09-15 · No fix listed CWE-862
Priority LOW 11
Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in the theme page-template activation feature.
CVSS 4.0LOW 2.1· Network · High privileges · No interaction · EPSS 0.0021 · Published 2026-09-15 · No fix listed CWE-352
Priority LOW 11
In Concrete CMS before 9.5.3, the SEO Bulk Update Meta Tags editor did not check per-page edit permissions before saving.
CVSS 4.0LOW 2.1· Network · High privileges · No interaction · EPSS 0.003 · Published 2026-09-15 · No fix listed CWE-862
Priority LOW 11
Concrete CMS before 9.5.3 did not enforce a per-page authorization check when reordering pages from the sitemap.
CVSS 4.0LOW 2.1· Network · High privileges · No interaction · EPSS 0.003 · Published 2026-09-15 · No fix listed CWE-862
Priority LOW 12
Concrete CMS 8.5.3 through 9.5.2 enabled the OAuth 2.0 refresh-token grant using the unmodified upstream League grant, which issued new access tokens from a valid refresh token without re-checking the associated account'…
CVSS 4.0LOW 2.3· Network · Low privileges · No interaction · EPSS 0.00238 · Published 2026-09-15 · No fix listed CWE-862
Priority LOW 11
Concrete CMS below 9.5.3 was vulnerable to Cross-Site Request Forgery in the dashboard SEO Excluded Words page.
CVSS 4.0LOW 2.3· Network · No auth · User interaction · EPSS 0.00177 · Published 2026-09-15 · No fix listed CWE-352
Priority LOW 11
Concrete CMS below 9.5.3 did not validate an anti-CSRF token on the block-arrangement backend endpoint (the arrange() action of Concrete\Controller\Backend\Page\ArrangeBlocks).
CVSS 4.0LOW 2.3· Network · No auth · User interaction · EPSS 0.00148 · Published 2026-09-15 · No fix listed CWE-352
Priority LOW 35
In Concrete CMS below CMS 9.5.3, the save_control action in the Express entities forms dashboard controller did not validate the anti-CSRF token.
CVSS 4.0HIGH 7.7· Network · No auth · User interaction · EPSS 0.00165 · Published 2026-09-15 · No fix listed CWE-352
Priority LOW 38
Concrete CMS before 9.5.3 does not apply HTML entity encoding to user-defined Form block question labels when rendering them as column headers in the Dashboard Form Submissions report (concrete/single_pages/dashboard/rep…
CVSS 4.0HIGH 8.4· Network · High privileges · User interaction · EPSS 0.00237 · Published 2026-09-15 · No fix listed CWE-79
Priority LOW 38
Concrete CMS 9 before 9.5.3 was vulnerable to stored cross-site scripting (XSS) in the Feature, Feature Link, Hero Image, and Image blocks and before Concrete 8.5.21 in the feature and Image blocks because the external l…
CVSS 4.0HIGH 8.5· Network · High privileges · User interaction · EPSS 0.00192 · Published 2026-09-15 · No fix listed CWE-306
Priority LOW 39
In Concrete CMS before 9.5.3, the Document Library block stored the file-set identifiers submitted through fsID[] without validating them as integers, and when the block was configured with setMode set to any it concaten…
CVSS 4.0HIGH 8.5· Network · High privileges · User interaction · EPSS 0.00509 · Published 2026-09-15 · No fix listed CWE-89
Priority LOW 38
Concrete CMS 9.5.2 and below is vulnerable to stored DOM-based Cross-site Scripting (XSS) via the Gallery block's per-image Caption field because the bundled Magnific Popup lightbox script (concrete/js/features/imagery/f…
CVSS 4.0HIGH 8.5· Network · High privileges · User interaction · EPSS 0.00237 · Published 2026-09-15 · No fix listed CWE-89
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