CVE-2026-47352: Typo3/cms core TYPO3 CMS Has Broken Access Vulnerability

MODERATE
Advisory Identifier: GHSA-2j54-93q2-3hjq
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CWE-862
Published
Advisory Summary

CVE-2026-47352 is a MODERATE typo3 cms has broken access vulnerability (CWE-862: Missing Authorization) affecting Typo3/cms core libraries in the Packagist ecosystem. The issue involves typo3 cms has broken access control in backend api. Remediation is available by upgrading affected packages to version 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3.

CVE-2026-47352 at a Glance

CVE Identifier CVE-2026-47352
GHSA Identifier GHSA-2j54-93q2-3hjq
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-862: Missing Authorization
Affected Product Typo3/cms core
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2026-47352

To remediate this vulnerability, upgrade all affected Typo3/cms core 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-core fixed: 10.4.57 
Upgrade typo3/cms-core to 10.4.57
typo3/cms-core fixed: 11.5.51 
Upgrade typo3/cms-core to 11.5.51
typo3/cms-core fixed: 12.4.46 
Upgrade typo3/cms-core to 12.4.46
typo3/cms-core fixed: 13.4.31 
Upgrade typo3/cms-core to 13.4.31
typo3/cms-core fixed: 14.3.3 
Upgrade typo3/cms-core to 14.3.3
typo3/cms-backend fixed: 10.4.57 
Upgrade typo3/cms-backend to 10.4.57
typo3/cms-backend fixed: 11.5.51 
Upgrade typo3/cms-backend to 11.5.51
typo3/cms-backend fixed: 12.4.46 
Upgrade typo3/cms-backend to 12.4.46
typo3/cms-backend fixed: 13.4.31 
Upgrade typo3/cms-backend to 13.4.31
typo3/cms-backend fixed: 14.3.3 
Upgrade typo3/cms-backend to 14.3.3
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-core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-47352, inspect your project dependencies for Typo3/cms core:

inspect dependencies for typo3/cms-core

Analyze the terminal output to locate any version of Typo3/cms core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.4.57), 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-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Typo3/cms core, 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 Authenticated backend users were able to retrieve file metadata via several Backend API routes without proper permission checks, allowing access to files outside their permitted file mounts or storages. ### Solution Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described. ### Credits TYPO3 CMS thanks Phong Lan for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it. ### Resources * [TYPO3-CORE-SA-2026-015](https://typo3.org/security/advisory/typo3-core-sa-2026-015)

CVE-2026-47352 Affected Typo3/cms core Versions

10 component(s)
Fixed Versions:
10.4.5711.5.5112.4.4613.4.3114.3.3
Product / Package Ecosystem Affected Versions Fixed Version
typo3/cms-core
 Packagist
< 10.4.57
10.4.57
typo3/cms-core
 Packagist
≥ 11.0.0
< 11.5.51
11.5.51
typo3/cms-core
 Packagist
≥ 12.0.0
< 12.4.46
12.4.46
typo3/cms-core
 Packagist
≥ 13.0.0
< 13.4.31
13.4.31
typo3/cms-core
 Packagist
≥ 14.0.0
< 14.3.3
14.3.3
typo3/cms-backend
 Packagist
< 10.4.57
10.4.57
typo3/cms-backend
 Packagist
≥ 11.0.0
< 11.5.51
11.5.51
typo3/cms-backend
 Packagist
≥ 12.0.0
< 12.4.46
12.4.46
typo3/cms-backend
 Packagist
≥ 13.0.0
< 13.4.31
13.4.31
typo3/cms-backend
 Packagist
≥ 14.0.0
< 14.3.3
14.3.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/TYPO3/typo3/security/advisories/GHSA-2j54-93q2-3hjq
NVD — CVE-2026-47352 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47352
Security Fix Commit FIX COMMIT
https://github.com/TYPO3/typo3/commit/17a3b7830d5931725db5fdab0cfc76d479884c96
Security Fix Commit FIX COMMIT
https://github.com/TYPO3/typo3/commit/bfe7c354168f467726020ed49299dd209a455719
Typo3/cms core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-47352.yaml
Typo3/cms core Source Repository REPOSITORY
https://github.com/TYPO3/typo3
Typo3/cms core Security Information SECURITY
https://typo3.org/security/advisory/typo3-core-sa-2026-015

Frequently Asked Questions

What is CVE-2026-47352?
CVE-2026-47352 is a security vulnerability in Typo3/cms core involving TYPO3 CMS has Broken Access Control in Backend API under CWE-862: Missing Authorization.
Which Typo3/cms core versions are affected?
Affected versions include releases prior to 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3 across affected packages: typo3/cms-core, typo3/cms-backend.
What version fixes CVE-2026-47352?
Upgrading to 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is typo3/cms-core affected?
Yes, typo3/cms-core is affected in releases prior to 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3. Upgrade your dependency to 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3 or later.
Is typo3/cms-backend affected?
Yes, typo3/cms-backend is affected in releases prior to 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3. Upgrade your dependency to 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3 or later.
What CWE is associated with CVE-2026-47352?
CVE-2026-47352 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Packagist dependencies for CVE-2026-47352?
Run the dependency tree command: 'inspect dependencies for typo3/cms-core'. 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-2j54-93q2-3hjq",
  "modified" : "2026-06-12T19:08:59Z",
  "published" : "2026-06-12T19:08:59Z",
  "aliases" : [ "CVE-2026-47352" ],
  "summary" : "TYPO3 CMS has Broken Access Control in Backend API",
  "details" : "### Problem\nAuthenticated backend users were able to retrieve file metadata via several Backend API routes without proper permission checks, allowing access to files outside their permitted file mounts or storages.\n\n### Solution\nUpdate to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.\n\n### Credits\nTYPO3 CMS thanks Phong Lan for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it.\n\n### Resources\n* [TYPO3-CORE-SA-2026-015](https://typo3.org/security/advisory/typo3-core-sa-2026-015)",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.4.57"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0"
      }, {
        "fixed" : "11.5.51"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "12.0.0"
      }, {
        "fixed" : "12.4.46"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "13.0.0"
      }, {
        "fixed" : "13.4.31"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "14.0.0"
      }, {
        "fixed" : "14.3.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.4.57"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0"
      }, {
        "fixed" : "11.5.51"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "12.0.0"
      }, {
        "fixed" : "12.4.46"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "13.0.0"
      }, {
        "fixed" : "13.4.31"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "14.0.0"
      }, {
        "fixed" : "14.3.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/security/advisories/GHSA-2j54-93q2-3hjq"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-47352"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/commit/17a3b7830d5931725db5fdab0cfc76d479884c96"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/commit/bfe7c354168f467726020ed49299dd209a455719"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-47352.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TYPO3/typo3"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-core-sa-2026-015"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-12T19:08:59Z",
    "nvd_published_at" : "2026-06-09T11:16:53Z"
  }
}