CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-8417

Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to /dashboard/extend/update/do_update/<pkgHandle>. The do_update() method in concrete/controllers/single_page/dashboard/extend/update.php checks only canInstallPackages() before executing upgradeCoreData() and upgrade() on the named package's controller. Because the endpoint is a state-changing GET route with no token enforcement, an attacker can force an authenticated administrator to trigger a package upgrade via a single cross-site navigation.In order to be vulnerable, the victim must be passing canInstallPackages() and and a target package must already be already installed. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 7.5 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks https://github.com/maru1009 for reporting.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.0

EPSS Ranking 8.1%

CVSS Severity

CVSS v3 Score 8.8

References

https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes

Products affected by CVE-2026-8417

Concretecms » Concrete Cms » Version: N/A

cpe:2.3:a:concretecms:concrete_cms:-
Concretecms » Concrete Cms » Version: 5.4.1.1

cpe:2.3:a:concretecms:concrete_cms:5.4.1.1
Concretecms » Concrete Cms » Version: 5.4.2

cpe:2.3:a:concretecms:concrete_cms:5.4.2
Concretecms » Concrete Cms » Version: 5.4.2.1

cpe:2.3:a:concretecms:concrete_cms:5.4.2.1
Concretecms » Concrete Cms » Version: 5.4.2.2

cpe:2.3:a:concretecms:concrete_cms:5.4.2.2
Concretecms » Concrete Cms » Version: 5.6.1

cpe:2.3:a:concretecms:concrete_cms:5.6.1
Concretecms » Concrete Cms » Version: 5.6.1.1

cpe:2.3:a:concretecms:concrete_cms:5.6.1.1
Concretecms » Concrete Cms » Version: 5.6.1.2

cpe:2.3:a:concretecms:concrete_cms:5.6.1.2
Concretecms » Concrete Cms » Version: 5.6.2

cpe:2.3:a:concretecms:concrete_cms:5.6.2
Concretecms » Concrete Cms » Version: 5.6.2.1

cpe:2.3:a:concretecms:concrete_cms:5.6.2.1
Concretecms » Concrete Cms » Version: 5.6.3

cpe:2.3:a:concretecms:concrete_cms:5.6.3
Concretecms » Concrete Cms » Version: 5.6.3.1

cpe:2.3:a:concretecms:concrete_cms:5.6.3.1
Concretecms » Concrete Cms » Version: 5.6.3.3

cpe:2.3:a:concretecms:concrete_cms:5.6.3.3
Concretecms » Concrete Cms » Version: 5.6.3.4

cpe:2.3:a:concretecms:concrete_cms:5.6.3.4
Concretecms » Concrete Cms » Version: 5.6.3.5

cpe:2.3:a:concretecms:concrete_cms:5.6.3.5
Concretecms » Concrete Cms » Version: 5.6.4.0

cpe:2.3:a:concretecms:concrete_cms:5.6.4.0
Concretecms » Concrete Cms » Version: 5.7.0

cpe:2.3:a:concretecms:concrete_cms:5.7.0
Concretecms » Concrete Cms » Version: 5.7.0.1

cpe:2.3:a:concretecms:concrete_cms:5.7.0.1
Concretecms » Concrete Cms » Version: 5.7.0.3

cpe:2.3:a:concretecms:concrete_cms:5.7.0.3
Concretecms » Concrete Cms » Version: 5.7.0.4

cpe:2.3:a:concretecms:concrete_cms:5.7.0.4
Concretecms » Concrete Cms » Version: 5.7.1

cpe:2.3:a:concretecms:concrete_cms:5.7.1
Concretecms » Concrete Cms » Version: 5.7.2

cpe:2.3:a:concretecms:concrete_cms:5.7.2
Concretecms » Concrete Cms » Version: 5.7.2.1

cpe:2.3:a:concretecms:concrete_cms:5.7.2.1
Concretecms » Concrete Cms » Version: 5.7.3

cpe:2.3:a:concretecms:concrete_cms:5.7.3
Concretecms » Concrete Cms » Version: 5.7.3.1

cpe:2.3:a:concretecms:concrete_cms:5.7.3.1
Concretecms » Concrete Cms » Version: 5.7.4

cpe:2.3:a:concretecms:concrete_cms:5.7.4
Concretecms » Concrete Cms » Version: 5.7.4.1

cpe:2.3:a:concretecms:concrete_cms:5.7.4.1
Concretecms » Concrete Cms » Version: 5.7.4.2

cpe:2.3:a:concretecms:concrete_cms:5.7.4.2
Concretecms » Concrete Cms » Version: 5.7.5

cpe:2.3:a:concretecms:concrete_cms:5.7.5
Concretecms » Concrete Cms » Version: 5.7.5.1

cpe:2.3:a:concretecms:concrete_cms:5.7.5.1
Concretecms » Concrete Cms » Version: 5.7.5.10

cpe:2.3:a:concretecms:concrete_cms:5.7.5.10
Concretecms » Concrete Cms » Version: 5.7.5.11

cpe:2.3:a:concretecms:concrete_cms:5.7.5.11
Concretecms » Concrete Cms » Version: 5.7.5.12

cpe:2.3:a:concretecms:concrete_cms:5.7.5.12
Concretecms » Concrete Cms » Version: 5.7.5.13

cpe:2.3:a:concretecms:concrete_cms:5.7.5.13
Concretecms » Concrete Cms » Version: 5.7.5.2

cpe:2.3:a:concretecms:concrete_cms:5.7.5.2
Concretecms » Concrete Cms » Version: 5.7.5.3

cpe:2.3:a:concretecms:concrete_cms:5.7.5.3
Concretecms » Concrete Cms » Version: 5.7.5.4

cpe:2.3:a:concretecms:concrete_cms:5.7.5.4
Concretecms » Concrete Cms » Version: 5.7.5.5

cpe:2.3:a:concretecms:concrete_cms:5.7.5.5
Concretecms » Concrete Cms » Version: 5.7.5.6

cpe:2.3:a:concretecms:concrete_cms:5.7.5.6
Concretecms » Concrete Cms » Version: 5.7.5.7

cpe:2.3:a:concretecms:concrete_cms:5.7.5.7
Concretecms » Concrete Cms » Version: 5.7.5.8

cpe:2.3:a:concretecms:concrete_cms:5.7.5.8
Concretecms » Concrete Cms » Version: 5.7.5.9

cpe:2.3:a:concretecms:concrete_cms:5.7.5.9
Concretecms » Concrete Cms » Version: 5.8.1.0

cpe:2.3:a:concretecms:concrete_cms:5.8.1.0
Concretecms » Concrete Cms » Version: 5.8.2.0

cpe:2.3:a:concretecms:concrete_cms:5.8.2.0
Concretecms » Concrete Cms » Version: 8.0

cpe:2.3:a:concretecms:concrete_cms:8.0
Concretecms » Concrete Cms » Version: 8.0.1

cpe:2.3:a:concretecms:concrete_cms:8.0.1
Concretecms » Concrete Cms » Version: 8.0.2

cpe:2.3:a:concretecms:concrete_cms:8.0.2
Concretecms » Concrete Cms » Version: 8.0.3

cpe:2.3:a:concretecms:concrete_cms:8.0.3
Concretecms » Concrete Cms » Version: 8.1.0

cpe:2.3:a:concretecms:concrete_cms:8.1.0
Concretecms » Concrete Cms » Version: 8.2.0

cpe:2.3:a:concretecms:concrete_cms:8.2.0
Concretecms » Concrete Cms » Version: 8.2.1

cpe:2.3:a:concretecms:concrete_cms:8.2.1
Concretecms » Concrete Cms » Version: 8.3.0

cpe:2.3:a:concretecms:concrete_cms:8.3.0
Concretecms » Concrete Cms » Version: 8.3.1

cpe:2.3:a:concretecms:concrete_cms:8.3.1
Concretecms » Concrete Cms » Version: 8.3.2

cpe:2.3:a:concretecms:concrete_cms:8.3.2
Concretecms » Concrete Cms » Version: 8.4.0

cpe:2.3:a:concretecms:concrete_cms:8.4.0
Concretecms » Concrete Cms » Version: 8.4.1

cpe:2.3:a:concretecms:concrete_cms:8.4.1
Concretecms » Concrete Cms » Version: 8.4.2

cpe:2.3:a:concretecms:concrete_cms:8.4.2
Concretecms » Concrete Cms » Version: 8.4.3

cpe:2.3:a:concretecms:concrete_cms:8.4.3
Concretecms » Concrete Cms » Version: 8.4.4

cpe:2.3:a:concretecms:concrete_cms:8.4.4
Concretecms » Concrete Cms » Version: 8.4.5

cpe:2.3:a:concretecms:concrete_cms:8.4.5
Concretecms » Concrete Cms » Version: 8.5.0

cpe:2.3:a:concretecms:concrete_cms:8.5.0
Concretecms » Concrete Cms » Version: 8.5.1

cpe:2.3:a:concretecms:concrete_cms:8.5.1
Concretecms » Concrete Cms » Version: 8.5.10

cpe:2.3:a:concretecms:concrete_cms:8.5.10
Concretecms » Concrete Cms » Version: 8.5.11

cpe:2.3:a:concretecms:concrete_cms:8.5.11
Concretecms » Concrete Cms » Version: 8.5.12

cpe:2.3:a:concretecms:concrete_cms:8.5.12
Concretecms » Concrete Cms » Version: 8.5.13

cpe:2.3:a:concretecms:concrete_cms:8.5.13
Concretecms » Concrete Cms » Version: 8.5.14

cpe:2.3:a:concretecms:concrete_cms:8.5.14
Concretecms » Concrete Cms » Version: 8.5.15

cpe:2.3:a:concretecms:concrete_cms:8.5.15
Concretecms » Concrete Cms » Version: 8.5.16

cpe:2.3:a:concretecms:concrete_cms:8.5.16
Concretecms » Concrete Cms » Version: 8.5.17

cpe:2.3:a:concretecms:concrete_cms:8.5.17
Concretecms » Concrete Cms » Version: 8.5.18

cpe:2.3:a:concretecms:concrete_cms:8.5.18
Concretecms » Concrete Cms » Version: 8.5.19

cpe:2.3:a:concretecms:concrete_cms:8.5.19
Concretecms » Concrete Cms » Version: 8.5.2

cpe:2.3:a:concretecms:concrete_cms:8.5.2
Concretecms » Concrete Cms » Version: 8.5.20

cpe:2.3:a:concretecms:concrete_cms:8.5.20
Concretecms » Concrete Cms » Version: 8.5.21

cpe:2.3:a:concretecms:concrete_cms:8.5.21
Concretecms » Concrete Cms » Version: 8.5.3

cpe:2.3:a:concretecms:concrete_cms:8.5.3
Concretecms » Concrete Cms » Version: 8.5.4

cpe:2.3:a:concretecms:concrete_cms:8.5.4
Concretecms » Concrete Cms » Version: 8.5.5

cpe:2.3:a:concretecms:concrete_cms:8.5.5
Concretecms » Concrete Cms » Version: 8.5.6

cpe:2.3:a:concretecms:concrete_cms:8.5.6
Concretecms » Concrete Cms » Version: 8.5.7

cpe:2.3:a:concretecms:concrete_cms:8.5.7
Concretecms » Concrete Cms » Version: 8.5.8

cpe:2.3:a:concretecms:concrete_cms:8.5.8
Concretecms » Concrete Cms » Version: 8.5.9

cpe:2.3:a:concretecms:concrete_cms:8.5.9
Concretecms » Concrete Cms » Version: 9.0

cpe:2.3:a:concretecms:concrete_cms:9.0
Concretecms » Concrete Cms » Version: 9.0.0

cpe:2.3:a:concretecms:concrete_cms:9.0.0
Concretecms » Concrete Cms » Version: 9.0.1

cpe:2.3:a:concretecms:concrete_cms:9.0.1
Concretecms » Concrete Cms » Version: 9.0.2

cpe:2.3:a:concretecms:concrete_cms:9.0.2
Concretecms » Concrete Cms » Version: 9.1.0

cpe:2.3:a:concretecms:concrete_cms:9.1.0
Concretecms » Concrete Cms » Version: 9.1.1

cpe:2.3:a:concretecms:concrete_cms:9.1.1
Concretecms » Concrete Cms » Version: 9.1.2

cpe:2.3:a:concretecms:concrete_cms:9.1.2
Concretecms » Concrete Cms » Version: 9.1.3

cpe:2.3:a:concretecms:concrete_cms:9.1.3
Concretecms » Concrete Cms » Version: 9.2.0

cpe:2.3:a:concretecms:concrete_cms:9.2.0
Concretecms » Concrete Cms » Version: 9.2.1

cpe:2.3:a:concretecms:concrete_cms:9.2.1
Concretecms » Concrete Cms » Version: 9.2.2

cpe:2.3:a:concretecms:concrete_cms:9.2.2
Concretecms » Concrete Cms » Version: 9.2.3

cpe:2.3:a:concretecms:concrete_cms:9.2.3
Concretecms » Concrete Cms » Version: 9.2.4

cpe:2.3:a:concretecms:concrete_cms:9.2.4
Concretecms » Concrete Cms » Version: 9.2.5

cpe:2.3:a:concretecms:concrete_cms:9.2.5
Concretecms » Concrete Cms » Version: 9.2.6

cpe:2.3:a:concretecms:concrete_cms:9.2.6
Concretecms » Concrete Cms » Version: 9.2.7

cpe:2.3:a:concretecms:concrete_cms:9.2.7
Concretecms » Concrete Cms » Version: 9.2.8

cpe:2.3:a:concretecms:concrete_cms:9.2.8
Concretecms » Concrete Cms » Version: 9.2.9

cpe:2.3:a:concretecms:concrete_cms:9.2.9
Concretecms » Concrete Cms » Version: 9.3.0

cpe:2.3:a:concretecms:concrete_cms:9.3.0
Concretecms » Concrete Cms » Version: 9.3.1

cpe:2.3:a:concretecms:concrete_cms:9.3.1
Concretecms » Concrete Cms » Version: 9.3.2

cpe:2.3:a:concretecms:concrete_cms:9.3.2
Concretecms » Concrete Cms » Version: 9.3.3

cpe:2.3:a:concretecms:concrete_cms:9.3.3
Concretecms » Concrete Cms » Version: 9.3.4

cpe:2.3:a:concretecms:concrete_cms:9.3.4
Concretecms » Concrete Cms » Version: 9.3.5

cpe:2.3:a:concretecms:concrete_cms:9.3.5
Concretecms » Concrete Cms » Version: 9.3.6

cpe:2.3:a:concretecms:concrete_cms:9.3.6
Concretecms » Concrete Cms » Version: 9.3.7

cpe:2.3:a:concretecms:concrete_cms:9.3.7
Concretecms » Concrete Cms » Version: 9.3.8

cpe:2.3:a:concretecms:concrete_cms:9.3.8
Concretecms » Concrete Cms » Version: 9.3.9

cpe:2.3:a:concretecms:concrete_cms:9.3.9
Concretecms » Concrete Cms » Version: 9.4.0

cpe:2.3:a:concretecms:concrete_cms:9.4.0
Concretecms » Concrete Cms » Version: 9.4.1

cpe:2.3:a:concretecms:concrete_cms:9.4.1
Concretecms » Concrete Cms » Version: 9.4.2

cpe:2.3:a:concretecms:concrete_cms:9.4.2
Concretecms » Concrete Cms » Version: 9.4.3

cpe:2.3:a:concretecms:concrete_cms:9.4.3
Concretecms » Concrete Cms » Version: 9.4.4

cpe:2.3:a:concretecms:concrete_cms:9.4.4
Concretecms » Concrete Cms » Version: 9.4.5

cpe:2.3:a:concretecms:concrete_cms:9.4.5
Concretecms » Concrete Cms » Version: 9.4.6

cpe:2.3:a:concretecms:concrete_cms:9.4.6
Concretecms » Concrete Cms » Version: 9.4.7

cpe:2.3:a:concretecms:concrete_cms:9.4.7
Concretecms » Concrete Cms » Version: 9.4.8

cpe:2.3:a:concretecms:concrete_cms:9.4.8
Concretecms » Concrete Cms » Version: 9.5.0

cpe:2.3:a:concretecms:concrete_cms:9.5.0

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-8417

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