CVE-2022-24899: Contao/core bundle Cross Site Scripting Vulnerability

HIGH
Advisory Identifier: GHSA-m8x6-6r63-qvj2
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CVSS 7.2
CWE-79
Published
Advisory Summary

CVE-2022-24899 is a HIGH (CVSS 7.2) cross site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Contao/core bundle libraries in the Packagist ecosystem. The issue involves cross site scripting via canonical tag in contao. Remediation is available by upgrading affected packages to version 4.13.3.

CVE-2022-24899 at a Glance

CVE Identifier CVE-2022-24899
GHSA Identifier GHSA-m8x6-6r63-qvj2
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Contao/core bundle
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.2

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

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

How to Fix CVE-2022-24899

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

contao/core-bundle fixed: 4.13.3 
Upgrade contao/core-bundle to 4.13.3
contao/contao fixed: 4.13.3 
Upgrade contao/contao to 4.13.3
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 contao/core-bundle

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-24899, inspect your project dependencies for Contao/core bundle:

inspect dependencies for contao/core-bundle

Analyze the terminal output to locate any version of Contao/core bundle in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.13.3), 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 Contao/core bundle, 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

### Impact Untrusted users can inject malicious code into the canonical tag, which is then executed on the web page (front end). ### Patches Update to Contao 4.13.3. ### Workarounds Disable canonical tags in the root page settings. ### References https://contao.org/en/security-advisories/cross-site-scripting-via-canonical-url ### For more information If you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).

CVE-2022-24899 Affected Contao/core bundle Versions

2 component(s)
Fixed Versions:
4.13.3
Product / Package Ecosystem Affected Versions Fixed Version
contao/core-bundle
 Packagist
≥ 4.13.0
< 4.13.3
4.13.3
contao/contao
 Packagist
≥ 4.13.0
< 4.13.3
4.13.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/contao/contao/security/advisories/GHSA-m8x6-6r63-qvj2
NVD — CVE-2022-24899 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-24899
Security Fix Commit FIX COMMIT
https://github.com/contao/contao/commit/199206849a87ddd0fa5cf674eb3c58292fd8366c
Contao/core bundle Security Information SECURITY
https://contao.org/en/security-advisories/cross-site-scripting-via-canonical-url.html
Contao/core bundle Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2022-24899.yaml
Contao/core bundle Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2022-24899.yaml
Contao/core bundle Source Repository REPOSITORY
https://github.com/contao/contao

Frequently Asked Questions

What is CVE-2022-24899?
CVE-2022-24899 is a security vulnerability in Contao/core bundle involving Cross site scripting via canonical tag in Contao under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Contao/core bundle versions are affected?
Affected versions include releases prior to 4.13.3 across affected packages: contao/core-bundle, contao/contao.
What version fixes CVE-2022-24899?
Upgrading to 4.13.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is contao/core-bundle affected?
Yes, contao/core-bundle is affected in releases prior to 4.13.3. Upgrade your dependency to 4.13.3 or later.
Is contao/contao affected?
Yes, contao/contao is affected in releases prior to 4.13.3. Upgrade your dependency to 4.13.3 or later.
What is the CVSS score of CVE-2022-24899?
CVE-2022-24899 has a CVSS v3.1 base score of 7.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2022-24899?
CVE-2022-24899 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-2022-24899?
Run the dependency tree command: 'inspect dependencies for contao/core-bundle'. 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-m8x6-6r63-qvj2",
  "modified" : "2025-04-17T12:44:51Z",
  "published" : "2022-05-20T19:54:56Z",
  "aliases" : [ "CVE-2022-24899" ],
  "summary" : "Cross site scripting via canonical tag in Contao",
  "details" : "### Impact\n\nUntrusted users can inject malicious code into the canonical tag, which is then executed on the web page (front end).\n\n### Patches\n\nUpdate to Contao 4.13.3.\n\n### Workarounds\n\nDisable canonical tags in the root page settings.\n\n### References\n\nhttps://contao.org/en/security-advisories/cross-site-scripting-via-canonical-url\n\n### For more information\n\nIf you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "contao/core-bundle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.13.0"
      }, {
        "fixed" : "4.13.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "contao/contao"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.13.0"
      }, {
        "fixed" : "4.13.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/contao/contao/security/advisories/GHSA-m8x6-6r63-qvj2"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-24899"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/contao/contao/commit/199206849a87ddd0fa5cf674eb3c58292fd8366c"
  }, {
    "type" : "WEB",
    "url" : "https://contao.org/en/security-advisories/cross-site-scripting-via-canonical-url.html"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2022-24899.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2022-24899.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/contao/contao"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-05-20T19:54:56Z",
    "nvd_published_at" : "2022-05-06T00:15:00Z"
  }
}