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CVE-2026-53638

Authorization Flaw in sylius/sylius (CVE-2026-53638)

Summary

vulnerability in sylius/sylius (CVE-2026-53638). Risk of unauthorized operations or information disclosure. Exploitable via `PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId}`. Mitigation: upgrade to `2.2.6` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **CVE-2026-53638** has been found in sylius/sylius. Attackers can target a specific entry point like `PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId}` over the network to misuse the product. Risk of unauthorized operations or information disclosure. CVSS score: ?/10. What to do: upgrade sylius/sylius to **2.2.6** or later. If unsure, ask your IT team or search "sylius/sylius CVE-2026-53638" on the vendor's site.
CVE-2026-53638 (sylius/sylius) — CWE-863 / Attack vector: remote (network-reachable) / no user interaction Attack surface: PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId} / PATCH /api/v2/shop/orders/{tokenValue}/payments/{paymentId} / `STATE_NEW` / `PaymentMethodChangerInterface` Patched: `2.2.6` — apply immediately Workaround: If users cannot bump Sylius right now, decorate the `Sylius\Bundle\ApiBundle\Changer\PaymentMethodChangerInterface` service in their applications. 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.
❓ What is the problem
**incorrect authorization** (CWE-863) exists in sylius/sylius. Attackers reach the vulnerable code path via `PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId}` without authentication.
📍 Affected scope
sylius/sylius — . Attack surface: PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId} / PATCH /api/v2/shop/orders/{tokenValue}/payments/{paymentId} / `STATE_NEW` / `PaymentMethodChangerInterface`.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **2.2.6**.
🛡️ Workaround
Workaround: If users cannot bump Sylius right now, decorate the `Sylius\Bundle\ApiBundle\Changer\PaymentMethodChangerInterface` service in their applications.
🔍 Detection
Search webserver/proxy logs for unusual `PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId}` requests with malformed payloads or SQL meta-characters. Run `grep -r 'sylius/sylius' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response Actions (7 steps)

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify
    grep -r 'sylius/sylius' . | 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 `sylius/sylius` を grep し、稼働しているサービス・バージョンを把握する。

  2. 3
    Hunt for indicators of compromise detect
    grep 'PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId}' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'

    アクセスログで `PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId}` への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。

  3. 5
    Apply temporary workaround mitigate
    If users cannot bump Sylius right now, decorate the `Sylius\Bundle\ApiBundle\Changer\PaymentMethodChangerInterface` service in their applications.

    パッチが適用されるまでの応急処置として、If users cannot bump Sylius right now, decorate the `Sylius\Bundle\ApiBundle\Changer\PaymentMethodChangerInterface` service in their applications. を実施。回避策の副作用 (機能低下) を確認した上で。

  4. 6
    Apply patch patch
    Upgrade sylius/sylius to 2.2.6

    ステージング環境で 2.2.6 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と、Step 3 で見つけた異常検知の続報チェックを含めること。

  5. 7
    Post-deployment verification verify
    Replay attack against PATCH /api/v2/shop/account/orders/{tokenValue}/payments/{paymentId} on staging to confirm patch closes the vector

    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 Step 3 と同じログクエリでアラート再発が無いか継続監視。

Affected packages

composer sylius/sylius
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.6"}]}]
Packagist sylius/sylius
[{"type":"ECOSYSTEM","events":[{"introduced":"2.2.0"},{"fixed":"2.2.6"}]}]

References

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