GHSA-256q-hx8w-xcqx: Silverstripe/framework Silverstripe Framework User Enumeration Vulnerability

MODERATE
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CVSS 5.3
CWE-204
Published
Advisory Summary

GHSA-256q-hx8w-xcqx is a MODERATE (CVSS 5.3) silverstripe framework user enumeration vulnerability (CWE-204: Observable Response Discrepancy) affecting Silverstripe/framework libraries in the Packagist ecosystem. The issue involves silverstripe framework user enumeration via timing attack on login and password reset forms. Remediation is available by upgrading affected packages to version 5.3.23.

GHSA-256q-hx8w-xcqx at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-256q-hx8w-xcqx
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-204: Observable Response Discrepancy
Affected Product Silverstripe/framework
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:N/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 None (I:N)
Availability None (A:N)

How to Fix GHSA-256q-hx8w-xcqx

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

silverstripe/framework fixed: 5.3.23 
Upgrade silverstripe/framework to 5.3.23
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 silverstripe/framework

How to Check if You Are Affected

To determine whether your application is affected by GHSA-256q-hx8w-xcqx, inspect your project dependencies for Silverstripe/framework:

inspect dependencies for silverstripe/framework

Analyze the terminal output to locate any version of Silverstripe/framework in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.3.23), 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-204: Observable Response Discrepancy, where the product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere. In Silverstripe/framework, 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 User enumeration is possible by performing a timing attack on the login or password reset pages with user credentials. This was originally disclosed in https://www.silverstripe.org/download/security-releases/ss-2017-005/ for CMS 3 but was not patched in CMS 4+ ### References - https://www.silverstripe.org/download/security-releases/ss-2017-005 - https://www.silverstripe.org/download/security-releases/ss-2025-001

GHSA-256q-hx8w-xcqx Affected Silverstripe/framework Versions

1 component(s)
Fixed Versions:
5.3.23
Product / Package Ecosystem Affected Versions Fixed Version
silverstripe/framework
 Packagist
≥ 4.0.0
< 5.3.23
5.3.23

References

GitHub Advisory / Wiki ADVISORY
https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-256q-hx8w-xcqx
NVD — GHSA-256q-hx8w-xcqx NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-12849
Silverstripe/framework Source Repository REPOSITORY
https://github.com/silverstripe/silverstripe-framework/pull/11681
Silverstripe/framework Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/SS-2025-001.yaml
Silverstripe/framework Source Repository REPOSITORY
https://github.com/silverstripe/silverstripe-framework
Silverstripe/framework Release RELEASE
https://www.silverstripe.org/download/security-releases/ss-2017-005
Silverstripe/framework Release RELEASE
https://www.silverstripe.org/download/security-releases/ss-2025-001

Frequently Asked Questions

What is GHSA-256q-hx8w-xcqx?
GHSA-256q-hx8w-xcqx is a security vulnerability in Silverstripe/framework involving Silverstripe Framework user enumeration via timing attack on login and password reset forms under CWE-204: Observable Response Discrepancy.
Which Silverstripe/framework versions are affected?
Affected versions include releases prior to 5.3.23 across affected packages: silverstripe/framework.
What version fixes GHSA-256q-hx8w-xcqx?
Upgrading to 5.3.23 (or the latest patched release for your respective branch) resolves the vulnerability.
Is silverstripe/framework affected?
Yes, silverstripe/framework is affected in releases prior to 5.3.23. Upgrade your dependency to 5.3.23 or later.
What is the CVSS score of GHSA-256q-hx8w-xcqx?
GHSA-256q-hx8w-xcqx has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with GHSA-256q-hx8w-xcqx?
GHSA-256q-hx8w-xcqx is classified under CWE-204: Observable Response Discrepancy (The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.).
How can I check Packagist dependencies for GHSA-256q-hx8w-xcqx?
Run the dependency tree command: 'inspect dependencies for silverstripe/framework'. 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-256q-hx8w-xcqx",
  "modified" : "2025-04-10T20:12:55Z",
  "published" : "2025-04-10T20:12:55Z",
  "aliases" : [ ],
  "summary" : "Silverstripe Framework user enumeration via timing attack on login and password reset forms",
  "details" : "### Impact\nUser enumeration is possible by performing a timing attack on the login or password reset pages with user credentials.\n\nThis was originally disclosed in https://www.silverstripe.org/download/security-releases/ss-2017-005/ for CMS 3 but was not patched in CMS 4+\n\n### References\n\n- https://www.silverstripe.org/download/security-releases/ss-2017-005\n- https://www.silverstripe.org/download/security-releases/ss-2025-001",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "silverstripe/framework"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "5.3.23"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-256q-hx8w-xcqx"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-12849"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/silverstripe/silverstripe-framework/pull/11681"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/SS-2025-001.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/silverstripe/silverstripe-framework"
  }, {
    "type" : "WEB",
    "url" : "https://www.silverstripe.org/download/security-releases/ss-2017-005"
  }, {
    "type" : "WEB",
    "url" : "https://www.silverstripe.org/download/security-releases/ss-2025-001"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-204" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-10T20:12:55Z",
    "nvd_published_at" : null
  }
}