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CVE-2021-40106

Good to know:

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Date: September 27, 2021

An issue was discovered in Concrete CMS through 8.5.5. There is unauthenticated stored XSS in blog comments via the website field.

Language: PHP

Severity Score

Related Resources (4)

https://hackerone.com/reports/1102042
https://nvd.nist.gov/vuln/detail/CVE-2021-40106
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes
https://www.mend.io/vulnerability-database/CVE-2021-40106

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

Top Fix

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Upgrade to version concrete5 - 8.5.6

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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