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Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-7882

Concrete CMS 9.5.0 and below is vulnerable to unauthorized file deletion due to an Inverted CSRF token check in the DeleteFile controller. The code throws an error when the token IS valid and proceeds with file deletion when the token is invalid or missing. This effectively disables CSRF protection for the file deletion endpoint, allowing cross-site request forgery attacks against users who have permission to edit conversation messages. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with a vector of CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Tristan Mandani for reporting.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.0

EPSS Ranking 6.2%

CVSS Severity

CVSS v3 Score 4.3

References

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

Products affected by CVE-2026-7882

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

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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

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Vulnerability Details CVE-2026-7882

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