CVE-2021-4139: Pimcore/pimcore Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-8xx9-rxrj-2m2w
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CVSS 6.6
CWE-79
Published
Advisory Summary

CVE-2021-4139 is a MODERATE (CVSS 6.6) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Pimcore/pimcore libraries in the Packagist ecosystem. The issue involves cross-site scripting in pimcore. Remediation is available by upgrading affected packages to version 10.2.7.

CVE-2021-4139 at a Glance

CVE Identifier CVE-2021-4139
GHSA Identifier GHSA-8xx9-rxrj-2m2w
Severity MODERATE
CVSS v3.1 Base Score 6.6
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Pimcore/pimcore
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L).

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

How to Fix CVE-2021-4139

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

pimcore/pimcore fixed: 10.2.7 
Upgrade pimcore/pimcore to 10.2.7
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 pimcore/pimcore

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-4139, inspect your project dependencies for Pimcore/pimcore:

inspect dependencies for pimcore/pimcore

Analyze the terminal output to locate any version of Pimcore/pimcore in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.2.7), 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 Pimcore/pimcore, 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

pimcore is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE-2021-4139 Affected Pimcore/pimcore Versions

1 component(s)
Fixed Versions:
10.2.7
Product / Package Ecosystem Affected Versions Fixed Version
pimcore/pimcore
 Packagist
< 10.2.7
10.2.7

References

NVD — CVE-2021-4139 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4139
Security Fix Commit FIX COMMIT
https://github.com/pimcore/pimcore/commit/d5c3e876d910784000335061c3bd24d301351245
Pimcore/pimcore Source Repository REPOSITORY
https://github.com/pimcore/pimcore
huntr.dev/bounties/6ec59e43-0... WEB
https://huntr.dev/bounties/6ec59e43-095f-4ba3-8b75-e92250da8e3a

Frequently Asked Questions

What is CVE-2021-4139?
CVE-2021-4139 is a security vulnerability in Pimcore/pimcore involving Cross-site Scripting in pimcore under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Pimcore/pimcore versions are affected?
Affected versions include releases prior to 10.2.7 across affected packages: pimcore/pimcore.
What version fixes CVE-2021-4139?
Upgrading to 10.2.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pimcore/pimcore affected?
Yes, pimcore/pimcore is affected in releases prior to 10.2.7. Upgrade your dependency to 10.2.7 or later.
What is the CVSS score of CVE-2021-4139?
CVE-2021-4139 has a CVSS v3.1 base score of 6.6 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L.
What CWE is associated with CVE-2021-4139?
CVE-2021-4139 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 CVE-2021-4139?
Run the dependency tree command: 'inspect dependencies for pimcore/pimcore'. 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-8xx9-rxrj-2m2w",
  "modified" : "2022-01-04T21:18:40Z",
  "published" : "2022-01-05T20:35:12Z",
  "aliases" : [ "CVE-2021-4139" ],
  "summary" : "Cross-site Scripting in pimcore",
  "details" : "pimcore is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pimcore/pimcore"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.2.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-4139"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pimcore/pimcore/commit/d5c3e876d910784000335061c3bd24d301351245"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pimcore/pimcore"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/6ec59e43-095f-4ba3-8b75-e92250da8e3a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-01-04T21:18:40Z",
    "nvd_published_at" : "2021-12-21T13:15:00Z"
  }
}