CVE-2021-41188: Shopware/shopware Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-4p3x-8qw9-24w9
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CVSS 5.7
CWE-79
Published
Advisory Summary

CVE-2021-41188 is a MODERATE (CVSS 5.7) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Shopware/shopware libraries in the Packagist ecosystem. The issue involves authenticated stored xss in shopware/shopware. Remediation is available by upgrading affected packages to version 5.7.6.

CVE-2021-41188 at a Glance

CVE Identifier CVE-2021-41188
GHSA Identifier GHSA-4p3x-8qw9-24w9
Severity MODERATE
CVSS v3.1 Base Score 5.7
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Shopware/shopware
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.7

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

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

How to Fix CVE-2021-41188

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

shopware/shopware fixed: 5.7.6 
Upgrade shopware/shopware to 5.7.6
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 shopware/shopware

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-41188, inspect your project dependencies for Shopware/shopware:

inspect dependencies for shopware/shopware

Analyze the terminal output to locate any version of Shopware/shopware in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.7.6), 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 Shopware/shopware, 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 Authenticated Stored XSS in Administration ### Patches Use the Security Plugin: https://store.shopware.com/en/swag575294366635f/shopware-security-plugin.html ### Workarounds If you cannot use the security plugin, add the following config to your `.htaccess` file ``` <IfModule mod_headers.c> <FilesMatch "\.(?i:svg)$"> Header set Content-Security-Policy "script-src 'none'" </FilesMatch> </IfModule> ``` If you are using nginx as server config, you can add the following to your configuration: ``` server { # ... location ~* ^.+\.svg$ { add_header Content-Security-Policy "script-src 'none'"; } } ``` ### References https://docs.shopware.com/en/shopware-5-en/sicherheitsupdates/security-update-10-2021

CVE-2021-41188 Affected Shopware/shopware Versions

1 component(s)
Fixed Versions:
5.7.6
Product / Package Ecosystem Affected Versions Fixed Version
shopware/shopware
 Packagist
< 5.7.6
5.7.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/shopware/shopware/security/advisories/GHSA-4p3x-8qw9-24w9
NVD — CVE-2021-41188 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41188
Security Fix Commit FIX COMMIT
https://github.com/shopware/shopware/commit/37213e91d525c95df262712cba80d1497e395a58
Shopware/shopware Security Information SECURITY
https://docs.shopware.com/en/shopware-5-en/sicherheitsupdates/security-update-10-2021
Shopware/shopware Source Repository REPOSITORY
https://github.com/shopware/shopware
Shopware/shopware Release RELEASE
https://github.com/shopware/shopware/releases/tag/v5.7.6
Shopware/shopware Security Information SECURITY
https://store.shopware.com/en/swag575294366635f/shopware-security-plugin.html

Frequently Asked Questions

What is CVE-2021-41188?
CVE-2021-41188 is a security vulnerability in Shopware/shopware involving Authenticated Stored XSS in shopware/shopware under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Shopware/shopware versions are affected?
Affected versions include releases prior to 5.7.6 across affected packages: shopware/shopware.
What version fixes CVE-2021-41188?
Upgrading to 5.7.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is shopware/shopware affected?
Yes, shopware/shopware is affected in releases prior to 5.7.6. Upgrade your dependency to 5.7.6 or later.
What is the CVSS score of CVE-2021-41188?
CVE-2021-41188 has a CVSS v3.1 base score of 5.7 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2021-41188?
CVE-2021-41188 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-2021-41188?
Run the dependency tree command: 'inspect dependencies for shopware/shopware'. 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-4p3x-8qw9-24w9",
  "modified" : "2021-10-26T17:56:23Z",
  "published" : "2021-10-27T18:53:18Z",
  "aliases" : [ "CVE-2021-41188" ],
  "summary" : "Authenticated Stored XSS in shopware/shopware",
  "details" : "### Impact\nAuthenticated Stored XSS in Administration\n\n### Patches\nUse the Security Plugin:\nhttps://store.shopware.com/en/swag575294366635f/shopware-security-plugin.html\n\n### Workarounds\nIf you cannot use the security plugin, add the following config to your `.htaccess` file\n\n```\n<IfModule mod_headers.c>\n    <FilesMatch \"\\.(?i:svg)$\">\n        Header set Content-Security-Policy \"script-src 'none'\"\n    </FilesMatch>\n</IfModule>\n```\n\nIf you are using nginx as server config, you can add the following to your configuration:\n```\nserver {\n    # ...\n\n    location ~* ^.+\\.svg$ {\n        add_header Content-Security-Policy \"script-src 'none'\";\n    }\n}\n```\n\n### References\nhttps://docs.shopware.com/en/shopware-5-en/sicherheitsupdates/security-update-10-2021\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "shopware/shopware"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.7.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/shopware/shopware/security/advisories/GHSA-4p3x-8qw9-24w9"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-41188"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/shopware/shopware/commit/37213e91d525c95df262712cba80d1497e395a58"
  }, {
    "type" : "WEB",
    "url" : "https://docs.shopware.com/en/shopware-5-en/sicherheitsupdates/security-update-10-2021"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/shopware/shopware"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/shopware/shopware/releases/tag/v5.7.6"
  }, {
    "type" : "WEB",
    "url" : "https://store.shopware.com/en/swag575294366635f/shopware-security-plugin.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-10-26T17:56:23Z",
    "nvd_published_at" : "2021-10-26T15:15:00Z"
  }
}