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CVE-2026-31822— Sylius has a XSS vulnerability in checkout login form

Quick assessment

Affected
Sylius Sylius
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sylius是波兰Sylius公司的一套基于Symfony框架的开源电子商务平台。 Sylius存在跨站脚本漏洞，该漏洞源于商店结账登录表单中失败登录响应的消息字段通过innerHTML渲染，可能导致跨站脚本攻击。以下版本受到影响：2.0.16之前版本、2.1.12之前版本和2.2.3之前版本。

AI Predicted 6.1 Difficulty: Easy EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-31822

Vulnerability Information
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Vulnerability Title
Sylius has a XSS vulnerability in checkout login form
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Sylius 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sylius是波兰Sylius公司的一套基于Symfony框架的开源电子商务平台。 Sylius存在跨站脚本漏洞，该漏洞源于商店结账登录表单中失败登录响应的消息字段通过innerHTML渲染，可能导致跨站脚本攻击。以下版本受到影响：2.0.16之前版本、2.1.12之前版本和2.2.3之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Sylius Sylius >= 2.2.0, < 2.2.3 -

II. Public POCs for CVE-2026-31822

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III. Intelligence Information for CVE-2026-31822

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Vendor Advisories for CVE-2026-31822 (1)

Same Patch Batch · Sylius · 2026-03-10 · 7 CVEs total

CVE-2026-31824 8.2 HIGH Sylius has a Promotion Usage Limit Bypass via Race Condition
CVE-2026-31825 5.3 MEDIUM Sylius has a DQL Injection via API Order Filters
CVE-2026-31823 4.8 MEDIUM Sylius has Authenticated Stored XSS
CVE-2026-31819 Sylius has an Open Redirect via Referer Header
CVE-2026-31821 Sylius is Missing Authorization in API v2 Add Item Endpoint
CVE-2026-31820 Sylius affected by IDOR in Cart and Checkout LiveComponents

IV. Related Vulnerabilities

Same product: Sylius
Same vendor: Sylius
Same weakness: CWE-79

V. Comments for CVE-2026-31822

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