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Description

Sylius is an Open Source eCommerce Framework on Symfony. A cross-site scripting (XSS) vulnerability exists in the shop checkout login form handled by the ApiLoginController Stimulus controller. When a login attempt fails, AuthenticationFailureHandler returns a JSON response whose message field is rendered into the DOM using innerHTML, allowing any HTML or JavaScript in that value to be parsed and executed by the browser. The issue is fixed in versions: 2.0.16, 2.1.12, 2.2.3 and above.

PUBLISHED Reserved 2026-03-09 | Published 2026-03-10 | Updated 2026-03-11 | Assigner GitHub_M




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

>= 2.2.0, < 2.2.3
affected

>= 2.1.0, < 2.1.12
affected

>= 2.0.0, < 2.0.16
affected

References

github.com/...Sylius/security/advisories/GHSA-vgh8-c6fp-7gcg

cve.org (CVE-2026-31822)

nvd.nist.gov (CVE-2026-31822)

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