CVE-2026-100871: Sylius

High severity, CVSS 8.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 fail to include firewall identification in JWT tokens issued by separate Admin and Shop API endpoints. Attackers can register a shop customer account using an administrator's email address and obtain a token that the Admin API resolves to that administrator, granting full administrative access.

Affected products

• Sylius Sylius: from 1.11.0, before 1.12.25 (fixed in 1.12.25); from 1.13.0, before 1.13.17 (fixed in 1.13.17); from 1.14.0, before 1.14.20 (fixed in 1.14.20); from 2.0.0, before 2.1.16 (fixed in 2.1.16); from 2.2.0, before 2.2.9 (fixed in 2.2.9)

Published 2026-09-27. Last modified 2026-09-30.