CVE-2025-59015: Typo3/cms core TYPO3 CMS Uses Insufficient Entropy Vulnerability

MODERATE
Advisory Identifier: GHSA-p5jq-5383-qvc7
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CVSS 6.5
CWE-331
Published
Advisory Summary

CVE-2025-59015 is a MODERATE (CVSS 6.5) typo3 cms uses insufficient entropy vulnerability (CWE-331: Insufficient Entropy) affecting Typo3/cms core libraries in the Packagist ecosystem. The issue involves typo3 cms uses insufficient entropy when generating passwords. Remediation is available by upgrading affected packages to version 12.4.37, 13.4.18.

CVE-2025-59015 at a Glance

CVE Identifier CVE-2025-59015
GHSA Identifier GHSA-p5jq-5383-qvc7
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-331: Insufficient Entropy
Affected Product Typo3/cms core
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:U/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 Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-59015

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: 12.4.37 
Upgrade typo3/cms-core to 12.4.37
typo3/cms-core fixed: 13.4.18 
Upgrade typo3/cms-core to 13.4.18
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-2025-59015, 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 12.4.37), 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-331: Insufficient Entropy, where the product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others. 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

A deterministic three‑character prefix in the Password Generation component of TYPO3 CMS versions 12.0.0–12.4.36 and 13.0.0–13.4.17 reduces entropy, allowing attackers to carry out brute‑force attacks more quickly.

CVE-2025-59015 Affected Typo3/cms core Versions

2 component(s)
Fixed Versions:
12.4.3713.4.18
Product / Package Ecosystem Affected Versions Fixed Version
typo3/cms-core
 Packagist
≥ 12.0.0
< 12.4.37
12.4.37
typo3/cms-core
 Packagist
≥ 13.0.0
< 13.4.18
13.4.18

References

NVD — CVE-2025-59015 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59015
Security Fix Commit FIX COMMIT
https://github.com/TYPO3-CMS/core/commit/d2057cc7b2c2db417a2af38c30cb9da42302ab70
Typo3/cms core Source Repository REPOSITORY
https://github.com/TYPO3-CMS/core
Typo3/cms core Security Information SECURITY
https://typo3.org/security/advisory/typo3-core-sa-2025-019

Frequently Asked Questions

What is CVE-2025-59015?
CVE-2025-59015 is a security vulnerability in Typo3/cms core involving TYPO3 CMS uses insufficient entropy when generating passwords under CWE-331: Insufficient Entropy.
Which Typo3/cms core versions are affected?
Affected versions include releases prior to 12.4.37, 13.4.18 across affected packages: typo3/cms-core.
What version fixes CVE-2025-59015?
Upgrading to 12.4.37, 13.4.18 (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 12.4.37, 13.4.18. Upgrade your dependency to 12.4.37, 13.4.18 or later.
What is the CVSS score of CVE-2025-59015?
CVE-2025-59015 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2025-59015?
CVE-2025-59015 is classified under CWE-331: Insufficient Entropy (The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.).
How can I check Packagist dependencies for CVE-2025-59015?
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-p5jq-5383-qvc7",
  "modified" : "2025-09-10T21:12:06Z",
  "published" : "2025-09-09T09:31:12Z",
  "aliases" : [ "CVE-2025-59015" ],
  "summary" : "TYPO3 CMS uses insufficient entropy when generating passwords",
  "details" : "A deterministic three‑character prefix in the Password Generation component of TYPO3 CMS versions 12.0.0–12.4.36 and 13.0.0–13.4.17 reduces entropy, allowing attackers to carry out brute‑force attacks more quickly.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "12.0.0"
      }, {
        "fixed" : "12.4.37"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "13.0.0"
      }, {
        "fixed" : "13.4.18"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-59015"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3-CMS/core/commit/d2057cc7b2c2db417a2af38c30cb9da42302ab70"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TYPO3-CMS/core"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-core-sa-2025-019"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-331" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-09-09T20:10:43Z",
    "nvd_published_at" : "2025-09-09T09:15:40Z"
  }
}