{"id":"GHSA-xvhc-gm7j-mhmc","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`, `\u003cscript\u003e`, `\u003cforeignObject\u003e`) executes in the context of the Shopware domain when accessed.\n\n## The Problem\n\nIn `src/Core/Framework/Resources/config/packages/shopware.yaml`, line 194:\n\n```yaml\nallowed_extensions: [\"jpg\", \"jpeg\", \"png\", \"webp\", \"avif\", \"gif\", \"svg\", ...]\n```\n\nSVG 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.\n\nA search of the entire codebase for SVG sanitization returns — no `DOMPurify`, no `svg-sanitize`, no `strip_tags` on SVG content, nothing.\n\n## Impact\n\nStored 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.\n\n## Suggested Fix\n\nEither:\n\n1. **Remove SVG from `allowed_extensions`** if SVG upload is not a core requirement\n2. **Sanitize SVG content** on upload using a library like `enshrined/svg-sanitize` (strips scripts, event handlers, external references)\n3. **Serve SVGs with `Content-Disposition: attachment`** to prevent inline rendering\n4. **Serve SVGs from a separate domain** (like Nextcloud's `usercontent.apps.nextcloud.com`)\n\nOption 2 is the most practical — `enshrined/svg-sanitize` is already used by WordPress and other PHP projects.\n\nRegards & BG,\nKeyvan Hardani","aliases":["CVE-2026-48015"],"modified":"2026-09-10T03:51:09.882226415Z","published":"2026-06-04T19:35:26Z","database_specific":{"nvd_published_at":null,"cwe_ids":["CWE-79"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-06-04T19:35:26Z"},"references":[{"type":"WEB","url":"https://github.com/shopware/shopware/security/advisories/GHSA-xvhc-gm7j-mhmc"},{"type":"PACKAGE","url":"https://github.com/shopware/shopware"},{"type":"WEB","url":"https://github.com/shopware/shopware/releases/tag/v6.6.10.18"},{"type":"WEB","url":"https://github.com/shopware/shopware/releases/tag/v6.7.10.1"}],"affected":[{"package":{"name":"shopware/core","ecosystem":"Packagist","purl":"pkg:composer/shopware/core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0.0"},{"fixed":"6.7.10.1"}]}],"versions":["v6.7.0.0","v6.7.0.1","v6.7.1.0","v6.7.1.1","v6.7.1.2","v6.7.10.0","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"],"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"}},{"package":{"name":"shopware/core","ecosystem":"Packagist","purl":"pkg:composer/shopware/core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.10.18"}]}],"versions":["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","6.4.0.0-RC1","6.4.1.0","6.4.1.1","6.4.1.2","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","6.4.2.0","6.4.2.1","6.4.20.0","6.4.20.1","6.4.20.2","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","6.5.0.0","6.5.0.0-rc1","6.5.0.0-rc2","6.5.0.0-rc3","6.5.0.0-rc4","v6.0.0+ea2","v6.1.0","v6.1.0-rc1","v6.1.0-rc2","v6.1.0-rc3","v6.1.0-rc4","v6.1.1","v6.1.2","v6.1.3","v6.1.4","v6.1.5","v6.1.6","v6.2.0","v6.2.0-RC1","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","v6.5.8.10","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","v6.5.8.2","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","v6.6.0.0","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","v6.6.0.1","v6.6.0.2","v6.6.0.3","v6.6.1.0","v6.6.1.1","v6.6.1.2","v6.6.10.0","v6.6.10.1","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","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","v6.6.2.0","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"],"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"}},{"package":{"name":"shopware/platform","ecosystem":"Packagist","purl":"pkg:composer/shopware/platform"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0.0"},{"fixed":"6.7.10.1"}]}],"versions":["v6.7.0.0","v6.7.0.1","v6.7.1.0","v6.7.1.1","v6.7.1.2","v6.7.10.0","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"],"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"}},{"package":{"name":"shopware/platform","ecosystem":"Packagist","purl":"pkg:composer/shopware/platform"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.10.18"}]}],"versions":["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","6.4.0.0-RC1","6.4.1.0","6.4.1.1","6.4.1.2","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","6.4.2.0","6.4.2.1","6.4.20.0","6.4.20.1","6.4.20.2","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","6.5.0.0","6.5.0.0-rc1","6.5.0.0-rc2","6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