Concrete CMS 9 through 9.4.2 and below 8.5.21 is vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concrete CMS | Concrete CMS | unaffected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Concretecms | Concrete Cms | — |
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-23658 | Concrete CMS vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page |
Github GHSA |
GHSA-4pcg-pjp5-3mc6 | Concrete CMS vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.383% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-79 | |
| CPEs | cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* | |
| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Concretecms
Concretecms concrete Cms |
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| Vendors & Products |
Concretecms
Concretecms concrete Cms |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Concrete CMS 9 to 9.4.2 and versions below 8.5.21 are vulnerable to Reflected Cross-Site Scripting (XSS) in the Conversation Messages Dashboard Page. Unsanitized input could cause theft of session cookies or tokens, defacement of web content, redirection to malicious sites, and (if victim is an admin), the execution of unauthorized actions. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Fortbridge https://fortbridge.co.uk/ for performing a penetration test and vulnerability assessment on Concrete CMS and reporting this issue. | |
| Title | Concrete CMS 9 through 9.4.2 and below 8.5.21 is vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page | |
| Weaknesses | CWE-20 | |
| References |
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| Metrics |
cvssV4_0
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