GHSA-4h5c-5g25-v7fh: Typo3/cms Cross-Site Scripting Vulnerability

MODERATE
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CVSS 6.1
CWE-79
Published
Advisory Summary

GHSA-4h5c-5g25-v7fh is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Typo3/cms libraries in the Packagist ecosystem. The issue involves typo3 cross-site scripting in form framework. Remediation is available by upgrading affected packages to version 8.7.23, 9.5.4.

GHSA-4h5c-5g25-v7fh at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-4h5c-5g25-v7fh
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Typo3/cms
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:R/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 Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix GHSA-4h5c-5g25-v7fh

To remediate this vulnerability, upgrade all affected Typo3/cms dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

typo3/cms fixed: 8.7.23 
Upgrade typo3/cms to 8.7.23
typo3/cms fixed: 9.5.4 
Upgrade typo3/cms to 9.5.4
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 typo3/cms

How to Check if You Are Affected

To determine whether your application is affected by GHSA-4h5c-5g25-v7fh, inspect your project dependencies for Typo3/cms:

inspect dependencies for typo3/cms

Analyze the terminal output to locate any version of Typo3/cms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.7.23), 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 Typo3/cms, 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

Failing to properly encode user input, frontend forms handled by the form framework (system extension “form”) are vulnerable to cross-site scripting.

GHSA-4h5c-5g25-v7fh Affected Typo3/cms Versions

2 component(s)
Fixed Versions:
8.7.239.5.4
Product / Package Ecosystem Affected Versions Fixed Version
typo3/cms
 Packagist
≥ 8.0.0
< 8.7.23
8.7.23
typo3/cms
 Packagist
≥ 9.0.0
< 9.5.4
9.5.4

References

Security Fix Commit FIX COMMIT
https://github.com/TYPO3/typo3/commit/79528f75e23c2832db321f36d777c1427553f764
Security Fix Commit FIX COMMIT
https://github.com/TYPO3/typo3/commit/a0c4348188559596f292ea03983171bde29d9870
Typo3/cms Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/2019-01-22-6.yaml
Typo3/cms Source Repository REPOSITORY
https://github.com/TYPO3/typo3
Typo3/cms Security Information SECURITY
https://typo3.org/security/advisory/typo3-core-sa-2019-007

Frequently Asked Questions

What is GHSA-4h5c-5g25-v7fh?
GHSA-4h5c-5g25-v7fh is a security vulnerability in Typo3/cms involving TYPO3 Cross-Site Scripting in Form Framework under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Typo3/cms versions are affected?
Affected versions include releases prior to 8.7.23, 9.5.4 across affected packages: typo3/cms.
What version fixes GHSA-4h5c-5g25-v7fh?
Upgrading to 8.7.23, 9.5.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is typo3/cms affected?
Yes, typo3/cms is affected in releases prior to 8.7.23, 9.5.4. Upgrade your dependency to 8.7.23, 9.5.4 or later.
What is the CVSS score of GHSA-4h5c-5g25-v7fh?
GHSA-4h5c-5g25-v7fh has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with GHSA-4h5c-5g25-v7fh?
GHSA-4h5c-5g25-v7fh 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 GHSA-4h5c-5g25-v7fh?
Run the dependency tree command: 'inspect dependencies for typo3/cms'. 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-4h5c-5g25-v7fh",
  "modified" : "2024-06-07T18:24:43Z",
  "published" : "2024-06-07T18:24:43Z",
  "aliases" : [ ],
  "summary" : "TYPO3 Cross-Site Scripting in Form Framework",
  "details" : "Failing to properly encode user input, frontend forms handled by the form framework (system extension “form”) are vulnerable to cross-site scripting.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.7.23"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "9.5.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/commit/79528f75e23c2832db321f36d777c1427553f764"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/commit/a0c4348188559596f292ea03983171bde29d9870"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/2019-01-22-6.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TYPO3/typo3"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-core-sa-2019-007"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-06-07T18:24:43Z",
    "nvd_published_at" : null
  }
}