CVE-2026-31821: Sylius is Missing Authorization in API v2 Add Item Endpoint

CVE-2026-31821 · Severity: medium · CVSS 4 · Published 2026-03-11

Sylius is Missing Authorization in API v2 Add Item Endpoint

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

Quick answers

Is CVE-2026-31821 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-31821 being exploited in the wild.
How severe is CVE-2026-31821?
Medium severity, with a CVSS score of 4, published 11 March 2026.
Which products and versions are affected?
sylius/sylius (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.16.
Is there a fix for CVE-2026-31821?
Yes. sylius/sylius (Packagist): upgrade to 2.0.16 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-31821?
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 2.0.16 or later
    composer require sylius/sylius:^2.0.16

Affected products

  • sylius/sylius (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.16

Identifiers

  • CVE-2026-31821
  • GHSA-wjmg-4cq5-m8hg

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