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Medium, CVSS 4.9

Shopware: Stored XSS via SVG file upload — no SVG sanitization

CVE-2026-48015GHSA-xvhc-gm7j-mhmc

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (shopware/core 6.7.10.1, 6.6.10.18; shopware/platform 6.7.10.1, 6.6.10.18), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Packagist shopware/core

    Affected
    >= 6.7.0.0, < 6.7.10.1< 6.6.10.18
    Fixed in
    6.7.10.1, 6.6.10.18

  • Packagist shopware/platform

    Affected
    >= 6.7.0.0, < 6.7.10.1< 6.6.10.18
    Fixed in
    6.7.10.1, 6.6.10.18

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
4.9 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
EPSS
  • CVE-2026-48015: 0.48% estimated exploitation activity in the next 30 days; percentile 41.80 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

SVG files are in the allowedextensions 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: SVG is whitelisted. The upload path (MediaUploadController → FileSaver → TypeDetector) recognizes SVG as ImageType with VECTORGRAPHIC 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 striptags 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…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-xvhc-gm7j-mhmc

Agent brief

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# Patch Next advisory brief: CVE-2026-48015

Advisory: Shopware: Stored XSS via SVG file upload — no SVG sanitization
IDs: CVE-2026-48015, GHSA-xvhc-gm7j-mhmc
Record: https://patchnext.com/advisories/cve-2026-48015 (revision 1, source checked 26 Oct 2026, 14:48 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: shopware/core 6.7.10.1, 6.6.10.18; shopware/platform 6.7.10.1, 6.6.10.18. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist shopware/core: affected >= 6.7.0.0, < 6.7.10.1; < 6.6.10.18; fixed in 6.7.10.1, 6.6.10.18
- Packagist shopware/platform: affected >= 6.7.0.0, < 6.7.10.1; < 6.6.10.18; fixed in 6.7.10.1, 6.6.10.18

## Suggested inspection (read-only)
- Packagist shopware/core: check the installed version with your package manager.
- Packagist shopware/platform: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on shopware/core, shopware/platform.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-xvhc-gm7j-mhmc (GitHub-reviewed advisory GHSA-xvhc-gm7j-mhmc lists affected ranges: Packagist shopware/core >=6.7.0.0 =0 =6.7.0.0 =0 <6.6.10.18)

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