CVE-2025-2967: Concrete5/concrete5 Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-xfqf-5rhg-5c73
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CVSS 3.5
CWE-79
Published
Advisory Summary

CVE-2025-2967 is a MODERATE (CVSS 3.5) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Concrete5/concrete5 libraries in the Packagist ecosystem. The issue involves concretecms cross-site scripting (xss) via html block text field. Remediation is available in the latest vendor maintenance releases.

CVE-2025-2967 at a Glance

CVE Identifier CVE-2025-2967
GHSA Identifier GHSA-xfqf-5rhg-5c73
Severity MODERATE
CVSS v3.1 Base Score 3.5
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Concrete5/concrete5
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 3.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-2967

To remediate this vulnerability, upgrade all affected Concrete5/concrete5 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

concrete5/concrete5 fixed: Latest secure release 
Upgrade concrete5/concrete5 to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for concrete5/concrete5

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-2967, inspect your project dependencies for Concrete5/concrete5:

inspect dependencies for concrete5/concrete5

Analyze the terminal output to locate any version of Concrete5/concrete5 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Concrete5/concrete5, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A vulnerability was found in ConcreteCMS up to 9.3.9. It has been classified as problematic. This affects the function Save of the component HTML Block Handler. The manipulation of the argument content leads to HTML injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVE-2025-2967 Affected Concrete5/concrete5 Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
concrete5/concrete5
 Packagist
≤ 9.3.9

References

NVD — CVE-2025-2967 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-2967
Concrete5/concrete5 Source Repository REPOSITORY
https://github.com/concretecms/concretecms
Concrete5/concrete5 Source Repository REPOSITORY
https://github.com/yaowenxiao721/Poc/blob/main/Concretecms/Concretecms-poc5.md
vuldb.com/ WEB
https://vuldb.com/?ctiid.302019
vuldb.com/ WEB
https://vuldb.com/?id.302019
vuldb.com/ WEB
https://vuldb.com/?submit.522417

Frequently Asked Questions

What is CVE-2025-2967?
CVE-2025-2967 is a security vulnerability in Concrete5/concrete5 involving ConcreteCMS Cross-Site Scripting (XSS) via HTML Block Text Field under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Concrete5/concrete5 versions are affected?
Affected versions include releases prior to current release patches across affected packages: concrete5/concrete5.
What version fixes CVE-2025-2967?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is concrete5/concrete5 affected?
Yes, concrete5/concrete5 is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2025-2967?
CVE-2025-2967 has a CVSS v3.1 base score of 3.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2025-2967?
CVE-2025-2967 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2025-2967?
Run the dependency tree command: 'inspect dependencies for concrete5/concrete5'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xfqf-5rhg-5c73",
  "modified" : "2025-03-31T16:55:43Z",
  "published" : "2025-03-31T03:30:24Z",
  "aliases" : [ "CVE-2025-2967" ],
  "summary" : "ConcreteCMS Cross-Site Scripting (XSS) via HTML Block Text Field",
  "details" : "A vulnerability was found in ConcreteCMS up to 9.3.9. It has been classified as problematic. This affects the function Save of the component HTML Block Handler. The manipulation of the argument content leads to HTML injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "concrete5/concrete5"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "9.3.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-2967"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/concretecms/concretecms"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/yaowenxiao721/Poc/blob/main/Concretecms/Concretecms-poc5.md"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?ctiid.302019"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.302019"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?submit.522417"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-31T16:55:43Z",
    "nvd_published_at" : "2025-03-31T01:15:40Z"
  }
}