Cross-Site Scripting (XSS) in shopware/core (CVE-2026-48015)
Summary
Cross-site scripting in shopware/core (CVE-2026-48015). Confidential information can be exposed externally. Exploitable via allowed_extensions. Mitigation: upgrade to 6.6.10.18 or later.
Original description
The description as published by the source.
Shopware is an open commerce platform. Prior to 6.6.10.18 and 6.7.10.1, SVG files are in the allowed_extensions whitelist in src/Core/Framework/Resources/config/packages/shopware.yaml and can be uploaded via the media manager without SVG content sanitization in the upload pipeline from MediaUploadController to FileSaver to TypeDetector, allowing malicious SVG JavaScript such as onload, , and to execute in the Shopware domain when the uploaded SVG is viewed. This issue is fixed in versions 6.6.10.18 and 6.7.10.1.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-48015 has been found in shopware/core.
Attackers can target a specific entry point like allowed_extensions over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 4.9/10.
What to do: upgrade shopware/core to 6.6.10.18 or later.
If unsure, ask your IT team or search "shopware/core CVE-2026-48015" on the vendor's site.
CVE-2026-48015 (shopware/core) — CWE-79 / CVSS v3 4.9
Attack vector: remote (network-reachable) / no user interaction
Attack surface: allowed_extensions / onload / MediaUploadController / FileSaver
Patched: 6.6.10.18 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in shopware/core. Attackers reach the vulnerable code path via allowed_extensions.
Check the vendor advisory for the affected versions of shopware/core. Attack surface: allowed_extensions / onload / MediaUploadController / FileSaver.
Severity: Medium (CVSS 4.9/10). Confidential information can be exposed externally.
Update to 6.6.10.18.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'shopware/core' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'shopware/core' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
shopware/coreを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade shopware/core to 6.6.10.18ステージング環境で 6.6.10.18 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- patch github.com
- web github.com
- web github.com
- web github.com