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osvGoogleOSV:GHSA-R7Q4-CW9R-VHP4
HistoryApr 03, 2024 - 9:31 p.m.

Concrete CMS Stored XSS in the Custom Class page editing

2024-04-0321:31:41
Google
osv.dev
5
concrete cms
stored xss
custom class
security vulnerability
cvss v3.1

3.1 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L

6.2 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.1%

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting.

3.1 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L

6.2 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.1%

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