What is CVE-2026-31823?

CVE-2026-31823 is a medium-severity vulnerability in Sylius, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-03-10.

How severe is CVE-2026-31823?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Sylius

CVE-2026-31823

Sylius is an Open Source eCommerce Framework on Symfony. An authenticated stored cross-site scripting (XSS) vulnerability exists in multiple places across the shop frontend and admin panel due to unsanitized entity names being rendered as…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (13.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Sylius — versions >= 2.2.0, < 2.2.3, >= 2.1.0, < 2.1.12, >= 2.0.0, < 2.0.16

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/Sylius/Sylius/security/advisories/GHSA-mx4q-xxc9-pf5q (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-31823?: CVE-2026-31823 is a medium-severity vulnerability in Sylius, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-03-10.
How severe is CVE-2026-31823?: Medium severity. CVSS v3 base score is 4.8 out of 10.