GHSA-xvhc-gm7j-mhmc

Suggest an improvement
Source
https://github.com/advisories/GHSA-xvhc-gm7j-mhmc
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-xvhc-gm7j-mhmc/GHSA-xvhc-gm7j-mhmc.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-xvhc-gm7j-mhmc
Aliases
  • CVE-2026-48015
Published
2026-06-04T19:35:26Z
Modified
2026-06-04T19:45:08.783975989Z
Severity
  • 4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Shopware: Stored XSS via SVG file upload — no SVG sanitization
Details

SVG files are in the allowed_extensions whitelist and can be uploaded by any admin user via the media manager. There is zero SVG content sanitization anywhere in the upload pipeline. A malicious SVG with JavaScript (onload, <script>, <foreignObject>) executes in the context of the Shopware domain when accessed.

The Problem

In src/Core/Framework/Resources/config/packages/shopware.yaml, line 194:

allowed_extensions: ["jpg", "jpeg", "png", "webp", "avif", "gif", "svg", ...]

SVG is whitelisted. The upload path (MediaUploadController → FileSaver → TypeDetector) recognizes SVG as ImageType with VECTOR_GRAPHIC flag, but no code strips JavaScript, event handlers, or external entity references from the SVG XML.

A search of the entire codebase for SVG sanitization returns — no DOMPurify, no svg-sanitize, no strip_tags on SVG content, nothing.

Impact

Stored XSS affecting all users who view the uploaded SVG. In an e-commerce context, this can lead to admin account takeover, customer data theft, or malicious plugin installation.

Suggested Fix

Either:

  1. Remove SVG from allowed_extensions if SVG upload is not a core requirement
  2. Sanitize SVG content on upload using a library like enshrined/svg-sanitize (strips scripts, event handlers, external references)
  3. Serve SVGs with Content-Disposition: attachment to prevent inline rendering
  4. Serve SVGs from a separate domain (like Nextcloud's usercontent.apps.nextcloud.com)

Option 2 is the most practical — enshrined/svg-sanitize is already used by WordPress and other PHP projects.

Regards & BG, Keyvan Hardani

Database specific 
{
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-04T19:35:26Z",
    "severity": "MODERATE",
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-79"
    ]
}
References

Affected packages

Packagist / shopware/core

Package

Name
shopware/core
Purl
pkg:composer/shopware%2Fcore

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.7.0.0
Fixed
6.7.10.1

Affected versions

v6.*
v6.7.0.0
v6.7.0.1
v6.7.1.0
v6.7.1.1
v6.7.1.2
v6.7.2.0
v6.7.2.1
v6.7.2.2
v6.7.3.0
v6.7.3.1
v6.7.4.0
v6.7.4.1
v6.7.4.2
v6.7.5.0
v6.7.5.1
v6.7.6.0
v6.7.6.1
v6.7.6.2
v6.7.7.0
v6.7.7.1
v6.7.8.0
v6.7.8.1
v6.7.8.2
v6.7.9.0
v6.7.9.1
v6.7.10.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-xvhc-gm7j-mhmc/GHSA-xvhc-gm7j-mhmc.json"

Packagist / shopware/core

Package

Name
shopware/core
Purl
pkg:composer/shopware%2Fcore

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.6.10.18

Affected versions

v6.*
v6.0.0+ea2
v6.1.0-rc1
v6.1.0-rc2
v6.1.0-rc3
v6.1.0-rc4
v6.1.0
v6.1.1
v6.1.2
v6.1.3
v6.1.4
v6.1.5
v6.1.6
v6.2.0-RC1
v6.2.0
v6.2.1
v6.2.2
v6.2.3
v6.5.1.0
v6.5.1.1
v6.5.2.0
v6.5.2.1
v6.5.3.0
v6.5.3.1
v6.5.3.2
v6.5.3.3
v6.5.4.0
v6.5.4.1
v6.5.5.0
v6.5.5.1
v6.5.5.2
v6.5.6.0
v6.5.6.1
v6.5.7.0
v6.5.7.1
v6.5.7.2
v6.5.7.3
v6.5.7.4
v6.5.8.0
v6.5.8.1
v6.5.8.2
v6.5.8.3
v6.5.8.4
v6.5.8.5
v6.5.8.6
v6.5.8.7
v6.5.8.8
v6.5.8.9
v6.5.8.10
v6.5.8.11
v6.5.8.12
v6.5.8.13
v6.5.8.14
v6.5.8.15
v6.5.8.16
v6.5.8.17
v6.5.8.18
v6.5.8.19
v6.6.0.0-rc1
v6.6.0.0-rc2
v6.6.0.0-rc3
v6.6.0.0-rc4
v6.6.0.0-rc5
v6.6.0.0-rc6
v6.6.0.0-rc7
v6.6.0.0
v6.6.0.1
v6.6.0.2
v6.6.0.3
v6.6.1.0
v6.6.1.1
v6.6.1.2
v6.6.2.0
v6.6.3.0
v6.6.3.1
v6.6.4.0
v6.6.4.1
v6.6.5.0
v6.6.5.1
v6.6.6.0
v6.6.6.1
v6.6.7.0
v6.6.7.1
v6.6.8.0
v6.6.8.1
v6.6.8.2
v6.6.9.0
v6.6.10.0
v6.6.10.1
v6.6.10.2
v6.6.10.3
v6.6.10.4
v6.6.10.5
v6.6.10.6
v6.6.10.7
v6.6.10.8
v6.6.10.9
v6.6.10.10
v6.6.10.11
v6.6.10.12
v6.6.10.13
v6.6.10.14
v6.6.10.15
v6.6.10.16
v6.6.10.17
6.*
6.3.0.0
6.3.0.1
6.3.0.2
6.3.1.0
6.3.1.1
6.3.2.0
6.3.2.1
6.3.3.0
6.3.3.1
6.3.4.0
6.3.4.1
6.3.5.0
6.3.5.1
6.3.5.2
6.3.5.3
6.3.5.4
6.4.0.0-RC1
6.4.0.0
6.4.1.0
6.4.1.1
6.4.1.2
6.4.2.0
6.4.2.1
6.4.3.0
6.4.3.1
6.4.4.0
6.4.4.1
6.4.5.0
6.4.5.1
6.4.6.0
6.4.6.1
6.4.7.0
6.4.8.0
6.4.8.1
6.4.8.2
6.4.9.0
6.4.10.0
6.4.10.1
6.4.11.0
6.4.11.1
6.4.12.0
6.4.13.0
6.4.14.0
6.4.15.0
6.4.15.1
6.4.15.2
6.4.16.0
6.4.16.1
6.4.17.0
6.4.17.1
6.4.17.2
6.4.18.0
6.4.18.1
6.4.19.0
6.4.20.0
6.4.20.1
6.4.20.2
6.5.0.0-rc1
6.5.0.0-rc2
6.5.0.0-rc3
6.5.0.0-rc4
6.5.0.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-xvhc-gm7j-mhmc/GHSA-xvhc-gm7j-mhmc.json"

Packagist / shopware/platform

Package

Name
shopware/platform
Purl
pkg:composer/shopware%2Fplatform

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.7.0.0
Fixed
6.7.10.1

Affected versions

v6.*
v6.7.0.0
v6.7.0.1
v6.7.1.0
v6.7.1.1
v6.7.1.2
v6.7.2.0
v6.7.2.1
v6.7.2.2
v6.7.3.0
v6.7.3.1
v6.7.4.0
v6.7.4.1
v6.7.4.2
v6.7.5.0
v6.7.5.1
v6.7.6.0
v6.7.6.1
v6.7.6.2
v6.7.7.0
v6.7.7.1
v6.7.8.0
v6.7.8.1
v6.7.8.2
v6.7.9.0
v6.7.9.1
v6.7.10.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-xvhc-gm7j-mhmc/GHSA-xvhc-gm7j-mhmc.json"

Packagist / shopware/platform

Package

Name
shopware/platform
Purl
pkg:composer/shopware%2Fplatform

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.6.10.18

Affected versions

v6.*
v6.0.0+ea2
v6.1.0-rc1
v6.1.0-rc2
v6.1.0-rc3
v6.1.0-rc4
v6.1.0
v6.1.1
v6.1.2
v6.1.3
v6.1.4
v6.1.5
v6.1.6
v6.2.0-RC1
v6.2.0
v6.2.1
v6.2.2
v6.2.3
v6.5.1.0
v6.5.1.1
v6.5.2.0
v6.5.2.1
v6.5.3.0
v6.5.3.1
v6.5.3.2
v6.5.3.3
v6.5.4.0
v6.5.4.1
v6.5.5.0
v6.5.5.1
v6.5.5.2
v6.5.6.0
v6.5.6.1
v6.5.7.0
v6.5.7.1
v6.5.7.2
v6.5.7.3
v6.5.7.4
v6.5.8.0
v6.5.8.1
v6.5.8.2
v6.5.8.3
v6.5.8.4
v6.5.8.5
v6.5.8.6
v6.5.8.7
v6.5.8.8
v6.5.8.9
v6.5.8.10
v6.5.8.11
v6.5.8.12
v6.5.8.13
v6.5.8.14
v6.5.8.15
v6.5.8.16
v6.5.8.17
v6.5.8.18
v6.5.8.19
v6.6.0.0-rc1
v6.6.0.0-rc2
v6.6.0.0-rc3
v6.6.0.0-rc4
v6.6.0.0-rc5
v6.6.0.0-rc6
v6.6.0.0-rc7
v6.6.0.0
v6.6.0.1
v6.6.0.2
v6.6.0.3
v6.6.1.0
v6.6.1.1
v6.6.1.2
v6.6.2.0
v6.6.3.0
v6.6.3.1
v6.6.4.0
v6.6.4.1
v6.6.5.0
v6.6.5.1
v6.6.6.0
v6.6.6.1
v6.6.7.0
v6.6.7.1
v6.6.8.0
v6.6.8.1
v6.6.8.2
v6.6.9.0
v6.6.10.0
v6.6.10.1
v6.6.10.2
v6.6.10.3
v6.6.10.4
v6.6.10.5
v6.6.10.6
v6.6.10.7
v6.6.10.8
v6.6.10.9
v6.6.10.10
v6.6.10.11
v6.6.10.12
v6.6.10.13
v6.6.10.14
v6.6.10.15
v6.6.10.16
v6.6.10.17
6.*
6.3.0.0
6.3.0.1
6.3.0.2
6.3.1.0
6.3.1.1
6.3.2.0
6.3.2.1
6.3.3.0
6.3.3.1
6.3.4.0
6.3.4.1
6.3.5.0
6.3.5.1
6.3.5.2
6.3.5.3
6.3.5.4
6.4.0.0-RC1
6.4.0.0
6.4.1.0
6.4.1.1
6.4.1.2
6.4.2.0
6.4.2.1
6.4.3.0
6.4.3.1
6.4.4.0
6.4.4.1
6.4.5.0
6.4.5.1
6.4.6.0
6.4.6.1
6.4.7.0
6.4.8.0
6.4.8.1
6.4.8.2
6.4.9.0
6.4.10.0
6.4.10.1
6.4.11.0
6.4.11.1
6.4.12.0
6.4.13.0
6.4.14.0
6.4.15.0
6.4.15.1
6.4.15.2
6.4.16.0
6.4.16.1
6.4.17.0
6.4.17.1
6.4.17.2
6.4.18.0
6.4.18.1
6.4.19.0
6.4.20.0
6.4.20.1
6.4.20.2
6.5.0.0-rc1
6.5.0.0-rc2
6.5.0.0-rc3
6.5.0.0-rc4
6.5.0.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-xvhc-gm7j-mhmc/GHSA-xvhc-gm7j-mhmc.json"