CC
Product
Concrete CMS
by Concrete CMS · last CVE Sep 16, 2026
116
CVEs
0
On KEV
9.6
Max CVSS
0
New 30D
Severity mix
Critical 2High 34Medium 69Low 11
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-85385
9.6
1%
Sep 16
Concrete CMS below 9.5.4 is vulnerable to Stored XSS via User Timezone Field
Affected: 5.0.0 through 9.5.3
CVE-2026-18119
9.0
0%
Sep 14
Concrete CMS below 9.5.3 is vulnerable to Stored XSS via unsanitized inline block custom style values
Affected: 5.0.0 through 9.5.2
CVE-2026-8409
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/logs/delete
Affected: 9.0 through 9.5.0
CVE-2026-8410
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/logs/bulk/delete
Affected: 9.0 through 9.5.0
CVE-2026-8411
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/page/bulk/delete
Affected: 9.0 through 9.5.0
CVE-2026-8412
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/page/bulk/cache
Affected: 9.0 through 9.5.0
CVE-2026-8413
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/page/bulk/design
Affected: 9.0 through 9.5.0
CVE-2026-8414
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/event/duplicate
Affected: 9.0 through 9.5.0
CVE-2026-8415
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/express/association/reorder
Affected: 9.0 through 9.5.0
CVE-2026-8416
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file addFavoriteFolder($id)
Affected: 9.0 through 9.5.0
CVE-2026-8427
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file removeFavoriteFolder($id)
Affected: 9.0 through 9.5.0
CVE-2026-8432
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file star()
Affected: 9.0 through 9.5.0
CVE-2026-8433
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan()
Affected: 9.0 through 9.5.0
CVE-2026-8434
8.8
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescanMultiple()
Affected: 9.0 through 9.5.0
CVE-2026-8350
8.8
0%
May 21
Concrete CMS 9.5.0 and below is vulnerable to missing authorization in the bulk_user_assignment.php which can lead to privilege escalation to Administrative Group
Affected: 5.0 through 9.5.0
CVE-2026-8421
8.8
0%
May 21
Concrete CMS 9.5.0 and below is vulnerable to CSRF on install_package() with conditional token bypass leading to RCE
Affected: 5.0 through 9.5.0
CVE-2026-8428
8.8
0%
May 21
CSRF token is not validated in the core CMS update controller for Concrete CMS 9.5.0 and below
Affected: 5.0 through 9.5.0
CVE-2026-8426
8.8
0%
May 21
Concrete CMS 9.5.0 and below is vulnerable to CSRF on prepare_remote_upgrade() leading to one-request RCE via package overwrite
Affected: 5.0 through 9.5.0
CVE-2026-8417
8.8
0%
May 21
Concrete CMS 9.5.0 and below is vulnerable to CSRF in do_update() in the package update controller
Affected: 5.0 through 9.5.0
CVE-2026-81901
8.7
0%
Sep 14
Concrete CMS 9.2.0 to 9.5.2 is vulnerable to stored XSS due to missing authorization in the `PUT /pages/{cID}` endpoint
Affected: 9.2.0 through 9.5.2
CVE-2026-10721
8.4
0%
Jun 10
Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize() calls in the in Permission, Cache, and Search components
Affected: 5 through 9.5.1
CVE-2026-7888
8.4
0%
Jun 3
Concrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize() calls in the Workflow, Form block, and File/Set components that lack the allowed_classes restriction.
Affected: 5.0 through 9.5.2
CVE-2026-81902
8.1
0%
Sep 14
Concrete CMS 9.0.0 to 9.5.2 is vulnerable to CSRF on Orphan Block Cleanup
Affected: 9.0.0 through 9.5.2
CVE-2026-18113
7.5
0%
Sep 15
Concrete CMS 9.0 to 9.5.2 is vulnerable to Stored XSS in the Top Navigation Bar Block via Dropdown Child Page Names
Affected: 9.0.0 through 9.5.2
CVE-2026-81898
7.5
0%
Sep 15
Concrete CMS below version 9.5.3 is vulnerable to Stored XSS via country-less Address attribute in Express association views
Affected: 5.0.0 through 9.5.2
CVE-2026-18110
7.5
2%
Sep 15
Concrete CMS 9.0.0 through 9.5.2 is vulnerable to missing authorization in the user selector autocomplete endpoint (/ccm/system/user/autocomplete), allowing an unauthenticated attacker to retrieve the complete backend user directory — internal ID, username
Affected: 9.0.0 through 9.5.2
CVE-2026-18115
7.4
0%
Sep 15
In Concrete CMS 9.2.0 to 9.5.2, Missing Authorization in REST API Users update() and change_password Enables Account Takeover.
Affected: 9.2.0 through 9.5.2
CVE-2026-81899
7.3
0%
Sep 15
Concrete CMS 9.0 to 9.5.2 is vulnerable to Stored XSS via group folder name on the Members > Groups dashboard
Affected: 9.0.0 through 9.5.2
CVE-2026-81895
7.2
1%
Sep 15
Concrete CMS 9.5.2 and below is vulnerable to Stored SQL Injection in Concrete CMS Document Library Block via `fsID[]` in `setMode=any`
Affected: 5.0.0 through 9.5.2
CVE-2026-8135
7.2
0%
May 21
Concrete CMS 9.5.0 and below is vulnerable to RCE due to insecure deserialization occurring in the ExpressEntryList block controller.
Affected: 5.0 through 9.5.0
CVE-2026-8134
7.2
1%
May 21
Concrete CMS 9.5.0 and below is vulnerable to Authenticated RCE via Composer customTemplate Path Traversal leading to PHP File Inclusion
Affected: 5.0 through 9.5.0
CVE-2026-3452
7.2
1%
Mar 4
Concrete CMS below 9.4.8 is vulnerable to stored deserialization leading to RCE in the Express Entry List block.
Affected: 5 before 9.4.8
CVE-2026-85387
7.1
0%
Sep 16
Concrete CMS before 9.5.4 allows a deactivated user to retain OAuth-authenticated REST API access
Affected: 5.0.0 through 9.5.3
CVE-2026-18424
7.1
0%
Sep 15
Concrete CMS 9.0.0 to 9.5.2 is vulnerable to SSRF protection bypass in remote file import when multiple URLs share a host but use different ports
Affected: 9.0.0 through 9.5.2
CVE-2026-18423
7.1
0%
Sep 15
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 allowing an authenticated user with permission on one Express entity to delete or rename saved search pres
Affected: 9.0.0 through 9.5.2
CVE-2026-81907
7.1
0%
Sep 11
Concrete CMS 9.5.2 and below is vulnerable to Cross-Site Request Forgery (CSRF) vin Express delete_entries allowing mass deletion of all entity records
Affected: 5.0.0 through 9.5.2
CVE-2026-87028
6.5
0%
Sep 16
Cross-Board IDOR in the Board Custom Slot Preview in Concrete CMS 9.0.0 through 9.5.3 Discloses Restricted Page Summary Fields
Affected: 9.0.0 through 9.5.3
CVE-2026-18426
6.5
0%
Sep 15
Concrete CMS 9.0.0 to 9.5.2 Express Form block missing authorization allows an authenticated editor to modify Express Forms they cannot edit
Affected: 9.0.0 through 9.5.2
CVE-2026-18422
6.5
0%
Sep 15
Concrete CMS below 9.5.3 Multilingual Page Assign Action Lacks Destination Authorization and CSRF Token Validation
Affected: 5.0.0 through 9.5.2
CVE-2026-81924
6.5
0%
Sep 15
Concrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in Theme Page Template Activation
Affected: 5.0.0 through 9.5.2
CVE-2026-81910
6.5
0%
Sep 11
Concrete CMS 9 through 9.5.2 is vulnerable to Server-Side Template Injection (SSTI) in Theme Customizer via Unvalidated Style Values
Affected: 9.0.0 through 9.5.2
CVE-2026-8435
6.5
0%
May 21
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file approveVersion()
Affected: 9.0 through 9.5.0
CVE-2026-8140
6.5
0%
May 21
Concrete CMS 9.5.0 and below is vulnerable to CSRF on download() in the package install controller
Affected: 5.0 through 9.5.0
CVE-2026-7890
6.4
0%
May 21
Concrete CMS 9.5.0 is vulnerable to SSRF via RSS Displayer Block
Affected: 5.0 through 9.5.0
CVE-2026-7887
6.4
0%
May 21
For Concrete CMS 9.5.0 and below, OAuth 2.0 Authorization-Code Handler Bypasses Account Status
Affected: 5.0 through 9.5.0
CVE-2026-81906
6.3
1%
Sep 10
[UNREVIEWED] OAuth Callback Login Bypasses Deactivated-Account Checks
Affected: 5.0.0 through 9.5.2
CVE-2026-81905
6.3
0%
Sep 10
Concrete CMS below 9.5.3 does not enforce validation-hash type on redemption, allowing a hash issued for one purpose to be redeemed for another.
Affected: 5.0.0 through 9.5.2
CVE-2026-18121
6.3
0%
Sep 10
Concrete CMS 9.5.2 and below is vulnerable to an authorization bypass (IDOR) in the Calendar block's frontend event dialog (/ccm/calendar/view_event/{bID}/{occurrence_id}).
Affected: 5.0.0 through 9.5.2
CVE-2026-81904
6.3
0%
Sep 8
Concrete CMS before 9.5.3 is vulnerable to Missing Authorization in Stack/Container Sub-Block Asset Registration
Affected: 5 through 9.5.2
CVE-2026-85386
6.1
0%
Sep 16
Concrete CMS before 9.5.4 stored is vulneratble to cross-site scripting via unauthenticated XML/XSLT file upload in the Form Block
Affected: 5.0.0 through 9.5.3
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