CVE-2026-53637: Sylius Cart FormComponent order modification and deletion

CVE-2026-53637 · Severity: medium · CVSS 6.5 · Published 2026-09-08

Sylius is an open-source e-commerce platform. A vulnerability in the cart management component allows users to modify or delete orders that have already been completed and paid for. This can lead to irreversible loss of customer order history and data corruption within the store's database.

Technologies: sylius/sylius (Packagist), Sylius. Vendors: Packagist, Sylius.

Quick answers

Is CVE-2026-53637 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-53637 being exploited in the wild.
How severe is CVE-2026-53637?
Medium severity, with a CVSS score of 6.5, published 8 September 2026.
Which products and versions are affected?
sylius/sylius (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.18; Sylius >= 2.0.0, < 2.0.18; >= 2.1.0, < 2.1.15; >= 2.2.0, < 2.2.6.
Is there a fix for CVE-2026-53637?
Yes. sylius/sylius (Packagist): upgrade to 2.0.18 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-53637 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-53637?
Check whether you run sylius/sylius (Packagist) or Sylius at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • sylius/sylius (Packagist): upgrade to 2.0.18 or later
    composer require sylius/sylius:^2.0.18

Technical details

A vulnerability exists in the Sylius Cart FormComponent where the LiveComponent fails to verify the current state of an order before performing mutations. If a user has a cart page open while the order is completed in another session (e.g., by an admin or a separate payment tab), subsequent actions like clearing the cart, removing items, or changing quantities are executed against the finalized order. This occurs because the `hydrateResource` and action methods do not sufficiently validate that the order is still in a 'cart' state. An attacker can deliberately exploit this to corrupt order data or delete completed records from the database. Patches are available in versions 2.0.18, 2.1.15, and 2.2.6.

Affected products

  • Sylius Sylius/Sylius >= 2.0.0, < 2.0.18; >= 2.1.0, < 2.1.15; >= 2.2.0, < 2.2.6

Identifiers

  • CVE-2026-53637
  • GHSA-5597-7rmh-97q5

Timeline

  • 2026-06-02: disclosed: Initial publication date
  • 2026-07-09: advisory: Advisory updated

References

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