Concrete CMS Versions 9.0.0 through 9.0.2 and 8.5.7 and below can download zip files over HTTP and execute code from those zip files which could lead to an RCE. Fixed by enforcing ‘concretesecure’ instead of ‘concrete’. Concrete now only makes requests over https even a request comes in via http. Concrete CMS security team ranked this 8 with CVSS v3.1 vector: AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H Credit goes to Anna for reporting HackerOne 1482520.

Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2 allow traversal in /index.php/ccm/system/file/upload which could result in an Arbitrary File Delete exploit. This was remediated by sanitizing /index.php/ccm/system/file/upload to ensure Concrete doesn’t allow traversal and by changing isFullChunkFilePresent to have an early false return when input doesn't match expectations.Concrete CMS Security team ranked this 5.8 with CVSS v3.1 vector AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H. Credit to Siebene for reporting.

Concrete CMS is vulnerable to CSRF due to the lack of "State" parameter for external Concrete authentication service for users of Concrete who use the "out of the box" core OAuth.

In Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2, the authTypeConcreteCookieMap table can be filled up causing a denial of service (high load).

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 did not use strict comparison for the legacysalt so that limited authentication bypass could occur if using this functionality. Remediate by updating to Concrete CMS 9.1.3+ or 8.5.10+.

XSS in /dashboard/blocks/stacks/viewdetails/ - old browsers only. When using an older browser with built-in XSS protection disabled, insufficient sanitation where built urls are outputted can be exploited for Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2 to allow XSS. This cannot be exploited in modern-day web browsers due to an automatic input escape mechanism. Concrete CMS Security team ranked this vulnerability 3.1with CVSS v3.1 Vector AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N. Sanitation has been added where built urls are output. Credit to Credit to Bogdan Tiron from FORTBRIDGE (https://www.fortbridge.co.uk/ ) for reporting

XSS in /dashboard/reports/logs/view - old browsers only. When using Internet Explorer with the XSS protection disabled, insufficient sanitation where built urls are outputted can be exploited for Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2. This cannot be exploited in modern-day web browsers due to an automatic input escape mechanism. Concrete CMS Security team ranked this vulnerability 2 with CVSS v3.1 Vector AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N. Thanks zeroinside for reporting.

Title for CVE: XSS in /dashboard/system/express/entities/forms/savecontrol/[GUID]: old browsers only.Description: When using Internet Explorer with the XSS protection disabled, editing a form control in an express entities form for Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2 can allow XSS. This cannot be exploited in modern-day web browsers due to an automatic input escape mechanism. Concrete CMS Security team ranked this vulnerability 2 with CVSS v3.1 Vector AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N. Thanks zeroinside for reporting.

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 is vulnerable to Reflected XSS in the multilingual report due to un-sanitized output. Remediate by updating to Concrete CMS 9.1.3+ or 8.5.10+.

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 is vulnerable to Reflected XSS in the dashboard icons due to un-sanitized output. Remediate by updating to Concrete CMS 9.1.3+ or 8.5.10+.

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 is vulnerable to Reflected XSS in the image manipulation library due to un-sanitized output.

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 is vulnerable to Reflected XSS - user can cause an administrator to trigger reflected XSS with a url if the targeted administrator is using an old browser that lacks XSS protection. Remediate by updating to Concrete CMS 9.1.3+ or 8.5.10+.

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 is vulnerable to XSS in the text input field since the result dashboard page output is not sanitized. The Concrete CMS security team has ranked this 4.2 with CVSS v3.1 vector AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N Thanks @akbarjafarli for reporting. Remediate by updating to Concrete CMS 8.5.10 and Concrete CMS 9.1.3.

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 does not issue a new session ID upon successful OAuth authentication. Remediate by updating to Concrete CMS 9.1.3+ or 8.5.10+.

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 is vulnerable to XXE based DNS requests leading to IP disclosure.

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 inadvertently disclose server-side sensitive information (secrets in environment variables and server information) when Debug Mode is left on in production.

Concrete CMS versions 9.0.0 to 9.3.2 and below 8.5.18 are vulnerable to Stored XSS in RSS Displayer when user input is stored and later embedded into responses. A rogue administrator could inject malicious code into fields due to insufficient input validation.

Concrete CMS versions 9.0.0 to 9.3.3 and below 8.5.19 are vulnerable to Stored XSS in Image Editor Background Color.  A rogue admin could add malicious code to the Thumbnails/Add-Type.

Concrete CMS version 9 before 9.2.5 is vulnerable to  stored XSS via the Role Name field since there is insufficient validation of administrator provided data for that field. A rogue administrator could inject malicious code into the Role Name field which might be executed when users visit the affected page. The Concrete CMS Security team scored this 2 with CVSS v3 vector AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Concrete versions below 9 do not include group types so they are not affected by this vulnerability.

Concrete CMS in version 9 before 9.2.5 is vulnerable to reflected XSS via the Image URL Import Feature due to insufficient validation of administrator provided data. A rogue administrator could inject malicious code when importing images, leading to the execution of the malicious code on the website user’s browser. The Concrete CMS Security team scored this 2 with CVSS v3 vector AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . This does not affect Concrete versions prior to version 9.

Concrete CMS version 9 before 9.2.5 is vulnerable to stored XSS in file tags and description attributes since administrator entered file attributes are not sufficiently sanitized in the Edit Attributes page. A rogue administrator could put malicious code into the file tags or description attributes and, when another administrator opens the same file for editing, the malicious code could execute. The Concrete CMS Security team scored this 2.4 with CVSS v3 vector AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator .

Concrete CMS version 9 before 9.2.7 is vulnerable to Stored XSS via the Name field of a Group type since there is insufficient validation of administrator provided data for that field. A rogue administrator could inject malicious code into the Name field which might be executed when users visit the affected page. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 2.2 with a vector of AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N Concrete versions below 9 do not include group types so they are not affected by this vulnerability. Thanks Luca Fuda for reporting.

Concrete CMS version 9 before 9.2.8 and previous versions prior to 8.5.16 is vulnerable to Stored XSS on the calendar color settings screen since Information input by the user is output without escaping. A rogue administrator could inject malicious javascript into the Calendar Color Settings screen which might be executed when users visit the affected page. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 2.0 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N&version=3.1 https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator

Thank you Rikuto Tauchi for reporting

Concrete CMS versions 9 below 9.2.8 and versions below 8.5.16 are vulnerable to Cross-site Scripting (XSS) in the Advanced File Search Filter. Prior to the fix, a rogue administrator could add malicious code in the file manager because of insufficient validation of administrator provided data. All administrators have access to the File Manager and hence could create a search filter with the malicious code attached. 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 .

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.

Concrete CMS version 9 below 9.2.8 and previous versions below 8.5.16 is vulnerable to Stored XSS in blocks of type file. Stored XSS could be caused by a rogue administrator adding malicious code to the link-text field when creating a block of type file. 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.

Concrete CMS version 9 prior to 9.2.8 and previous versions prior to 8.5.16 are vulnerable to Stored XSS in the Search Field. Prior to the fix, stored XSS could be executed by an administrator changing a filter to which a rogue administrator had previously added malicious code. 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

Concrete CMS versions 9.0.0 through 9.3.2 are affected by a stored XSS vulnerability in the generate dashboard board instance functionality. The Name input field does not check the input sufficiently letting a rogue administrator have the capability to inject malicious JavaScript code. The Concrete CMS security team gave this vulnerability a CVSS v4 score of 4.6 with a vector of CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Concrete versions below 9 are not affected by this vulnerability.Thanks fhAnso for reporting. (CNA updated this risk rank on 17 Jan 2025 by lowering the AC based on CVSS 4.0 documentation that access privileges should not be considered for AC).

Concrete CMS versions 9 through 9.3.2 and below 8.5.18 are vulnerable to Stored XSS in getAttributeSetName().  A rogue administrator could inject malicious code.

Concrete CMS versions 9.0.0 through 9.3.2 are affected by a stored XSS vulnerability in Board instances. A rogue administrator could inject malicious code.