CVE-2024-55921: Typo3/cms extensionmanager TYPO3 Extension Manager Module Vulnerable Vulnerability

HIGH
Advisory Identifier: GHSA-4g52-pq8j-6qv5
CVSS 7.5
CWE-749 CWE-352
Published
Advisory Summary

CVE-2024-55921 is a HIGH (CVSS 7.5) typo3 extension manager module vulnerable vulnerability (CWE-749: Exposed Dangerous Method or Function) affecting Typo3/cms extensionmanager libraries in the Packagist ecosystem. The issue involves typo3 extension manager module vulnerable to cross-site request forgery. Remediation is available by upgrading affected packages to version 10.4.48, 11.5.42, 12.4.25, 13.4.3.

CVE-2024-55921 at a Glance

CVE Identifier CVE-2024-55921
GHSA Identifier GHSA-4g52-pq8j-6qv5
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-749: Exposed Dangerous Method or Function
Affected Product Typo3/cms extensionmanager
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

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

How to Fix CVE-2024-55921

To remediate this vulnerability, upgrade all affected Typo3/cms extensionmanager 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-extensionmanager fixed: 10.4.48
Upgrade typo3/cms-extensionmanager to 10.4.48
typo3/cms-extensionmanager fixed: 11.5.42
Upgrade typo3/cms-extensionmanager to 11.5.42
typo3/cms-extensionmanager fixed: 12.4.25
Upgrade typo3/cms-extensionmanager to 12.4.25
typo3/cms-extensionmanager fixed: 13.4.3
Upgrade typo3/cms-extensionmanager to 13.4.3
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 typo3/cms-extensionmanager

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-55921, inspect your project dependencies for Typo3/cms extensionmanager:

inspect dependencies for typo3/cms-extensionmanager

Analyze the terminal output to locate any version of Typo3/cms extensionmanager in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.4.48), 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-749: Exposed Dangerous Method or Function, where the product provides an applications programming interface (api) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted. In Typo3/cms extensionmanager, 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

### Problem A vulnerability has been identified in the backend user interface functionality involving deep links. Specifically, this functionality is susceptible to Cross-Site Request Forgery (CSRF). Additionally, state-changing actions in downstream components incorrectly accepted submissions via HTTP GET and did not enforce the appropriate HTTP method. Successful exploitation of this vulnerability requires the victim to have an active session on the backend user interface and to be deceived into interacting with a malicious URL targeting the backend, which can occur under the following conditions: * the user opens a malicious link, such as one sent via email. * the user visits a compromised or manipulated website while the following settings are misconfigured: + `security.backend.enforceReferrer` feature is disabled, + `BE/cookieSameSite` configuration is set to `lax` or `none` The vulnerability in the affected downstream component “Extension Manager Module” allows attackers to retrieve and install 3rd party extensions from the TYPO3 Extension Repository - which can lead to remote code execution in the worst case. ### Solution Update to TYPO3 versions 11.5.42 ELTS, 12.4.25 LTS, 13.4.3 LTS that fix the problem described. ### Credits Thanks to TYPO3 core and security members Benjamin Franzke, Oliver Hader, Andreas Kienast, Torben Hansen, Elias Häußler who fixed the issue. ### References * [TYPO3-CORE-SA-2025-006](https://typo3.org/security/advisory/typo3-core-sa-2025-006)

CVE-2024-55921 Affected Typo3/cms extensionmanager Versions

4 component(s)
Fixed Versions:
10.4.4811.5.4212.4.2513.4.3
Product / Package Ecosystem Affected Versions Fixed Version
typo3/cms-extensionmanager
Packagist
≥ 10.0.0
< 10.4.48
10.4.48
typo3/cms-extensionmanager
Packagist
≥ 11.0.0
< 11.5.42
11.5.42
typo3/cms-extensionmanager
Packagist
≥ 12.0.0
< 12.4.25
12.4.25
typo3/cms-extensionmanager
Packagist
≥ 13.0.0
< 13.4.3
13.4.3

References

Frequently Asked Questions

What is CVE-2024-55921?
CVE-2024-55921 is a security vulnerability in Typo3/cms extensionmanager involving TYPO3 Extension Manager Module vulnerable to Cross-Site Request Forgery under CWE-749: Exposed Dangerous Method or Function.
Which Typo3/cms extensionmanager versions are affected?
Affected versions include releases prior to 10.4.48, 11.5.42, 12.4.25, 13.4.3 across affected packages: typo3/cms-extensionmanager.
What version fixes CVE-2024-55921?
Upgrading to 10.4.48, 11.5.42, 12.4.25, 13.4.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is typo3/cms-extensionmanager affected?
Yes, typo3/cms-extensionmanager is affected in releases prior to 10.4.48, 11.5.42, 12.4.25, 13.4.3. Upgrade your dependency to 10.4.48, 11.5.42, 12.4.25, 13.4.3 or later.
What is the CVSS score of CVE-2024-55921?
CVE-2024-55921 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2024-55921?
CVE-2024-55921 is classified under CWE-749: Exposed Dangerous Method or Function (The product provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted.).
How can I check Packagist dependencies for CVE-2024-55921?
Run the dependency tree command: 'inspect dependencies for typo3/cms-extensionmanager'. 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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4g52-pq8j-6qv5",
  "modified" : "2025-05-21T14:13:28Z",
  "published" : "2025-01-14T15:40:07Z",
  "aliases" : [ "CVE-2024-55921" ],
  "summary" : "TYPO3 Extension Manager Module vulnerable to Cross-Site Request Forgery",
  "details" : "### Problem\nA vulnerability has been identified in the backend user interface functionality involving deep links. Specifically, this functionality is susceptible to Cross-Site Request Forgery (CSRF). Additionally, state-changing actions in downstream components incorrectly accepted submissions via HTTP GET and did not enforce the appropriate HTTP method.\n\nSuccessful exploitation of this vulnerability requires the victim to have an active session on the backend user interface and to be deceived into interacting with a malicious URL targeting the backend, which can occur under the following conditions:\n\n* the user opens a malicious link, such as one sent via email.\n* the user visits a compromised or manipulated website while the following settings are misconfigured:\n  + `security.backend.enforceReferrer` feature is disabled,\n  + `BE/cookieSameSite` configuration is set to `lax` or `none`\n\nThe vulnerability in the affected downstream component “Extension Manager Module” allows attackers to retrieve and install 3rd party extensions from the TYPO3 Extension Repository - which can lead to remote code execution in the worst case.\n\n### Solution\nUpdate to TYPO3 versions 11.5.42 ELTS, 12.4.25 LTS, 13.4.3 LTS that fix the problem described.\n\n### Credits\nThanks to TYPO3 core and security members Benjamin Franzke, Oliver Hader, Andreas Kienast, Torben Hansen, Elias Häußler who fixed the issue.\n\n### References\n* [TYPO3-CORE-SA-2025-006](https://typo3.org/security/advisory/typo3-core-sa-2025-006)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-extensionmanager"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.0.0"
      }, {
        "fixed" : "10.4.48"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 10.4.47"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-extensionmanager"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0"
      }, {
        "fixed" : "11.5.42"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 11.5.41"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-extensionmanager"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "12.0.0"
      }, {
        "fixed" : "12.4.25"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 12.4.24"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-extensionmanager"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "13.0.0"
      }, {
        "fixed" : "13.4.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 13.4.2"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/security/advisories/GHSA-4g52-pq8j-6qv5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-55921"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3-CMS/extensionmanager/commit/a5a58626dcb2af0c31bc6aec068e3d24e789b9e8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TYPO3-CMS/extensionmanager"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-core-sa-2025-006"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352", "CWE-749" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-01-14T15:40:07Z",
    "nvd_published_at" : "2025-01-14T20:15:29Z"
  }
}