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CVE-2026-21451— Bagisto has HTML Filter Bypass that Enables Stored XSS

Quick assessment

Affected
bagisto bagisto
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Bagisto是印度Webkul Software开源的一套开源的电子商务框架。 Bagisto 2.3.10之前版本存在跨站脚本漏洞，该漏洞源于CMS页面编辑器存在存储型跨站脚本，可能导致账户接管。

AI Predicted 8.1 Difficulty: Moderate EPSS 0.56% · P45
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I. Basic Information for CVE-2026-21451

Vulnerability Information
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Vulnerability Title
Bagisto has HTML Filter Bypass that Enables Stored XSS
Source: CVE Program / CVE List V5
Vulnerability Description
Bagisto is an open source laravel eCommerce platform. A stored Cross-Site Scripting (XSS) vulnerability exists in Bagisto prior to version 2.3.10 within the CMS page editor. Although the platform normally attempts to sanitize `<script>` tags, the filtering can be bypassed by manipulating the raw HTTP POST request before submission. As a result, arbitrary JavaScript can be stored in the CMS content and executed whenever the page is viewed or edited. This exposes administrators to a high-severity risk, including complete account takeover, backend hijacking, and malicious script execution. Version 2.3.10 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P
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
Bagisto 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bagisto是印度Webkul Software开源的一套开源的电子商务框架。 Bagisto 2.3.10之前版本存在跨站脚本漏洞，该漏洞源于CMS页面编辑器存在存储型跨站脚本，可能导致账户接管。
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
bagisto bagisto < 2.3.10 -

II. Public POCs for CVE-2026-21451

# POC Description Source Link Shenlong Link
1 CVE-2026-21451 https://github.com/Ashwesker/Ashwesker-CVE-2026-21451 POC Details
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III. Intelligence Information for CVE-2026-21451

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Vendor Advisories for CVE-2026-21451 (1)

Same Patch Batch · bagisto · 2026-01-02 · 6 CVEs total

CVE-2026-21447 7.1 HIGH Bagisto has IDOR in Customer Order Reorder Functionality
CVE-2026-21450 Bagisto has SSTI in parameter that can lead to RCE
CVE-2026-21448 Bagisto has Normal & Blind SSTI from low-privilege user when ordering product
CVE-2026-21449 Bagisto has SSTI via first and last name from low-privilege user (not admin)
CVE-2026-21446 Bagisto Missing Authentication on Installer API Endpoints

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-21451

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