# CVE-2026-31819: Sylius has an Open Redirect via Referer Header

Source: https://junglewise.ai/threats/cve-2026-31819-sylius-has-an-open-redirect-via-referer-header  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-11  
License: CC BY 4.0 with a link back

CVE-2026-31819 · Severity: medium · CVSS 4 · Published 2026-03-11

Sylius has an Open Redirect via Referer Header

Technologies: [sylius/sylius (Packagist)](https://junglewise.ai/threats/technologies/sylius-sylius). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2026-31819 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-31819 being exploited in the wild.

**How severe is CVE-2026-31819?** Medium severity, with a CVSS score of 4, published 11 March 2026.

**Which products and versions are affected?** sylius/sylius (Packagist) ECOSYSTEM:introduced=0,fixed=1.9.12.

**Is there a fix for CVE-2026-31819?** Yes. sylius/sylius (Packagist): upgrade to 1.9.12 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-31819?** Check whether you run sylius/sylius (Packagist) 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 1.9.12 or later

  ```sh
  composer require sylius/sylius:^1.9.12
  ```


## Affected products

- sylius/sylius (Packagist) ECOSYSTEM:introduced=0,fixed=1.9.12

## Identifiers

- CVE-2026-31819
- GHSA-9ffx-f77r-756w

## Related threats

- [Sylius IDOR in Shop Payment Request API endpoints](https://junglewise.ai/threats/cve-2026-53639-sylius-idor-in-shop-payment-request-api-endpoints)
- [Sylius authorization bypass in shop account orders API](https://junglewise.ai/threats/cve-2026-53638-sylius-authorization-bypass-in-shop-account-orders-api)
- [Sylius Cart FormComponent order modification and deletion](https://junglewise.ai/threats/cve-2026-53637-sylius-cart-formcomponent-order-modification-and-deletion)
- [Sylius has a DQL Injection via API Order Filters](https://junglewise.ai/threats/cve-2026-31825-sylius-has-a-dql-injection-via-api-order-filters)
- [Sylius has a Promotion Usage Limit Bypass via Race Condition](https://junglewise.ai/threats/cve-2026-31824-sylius-has-a-promotion-usage-limit-bypass-via-race-condition)