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CVE-2026-21451

Bagisto has HTML Filter Bypass that Enables Stored XSS

Published: Jan 2, 2026Updated: Jan 8, 2026 Sources: CVE List NVD GHSACWE-79
NVD MITRE
8.4CVSSHIGH
EPSS Score
0.5%
Top 61.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

bagistobagisto
On-prem
Web & CMS Plugins / ecommerce-platform
bagisto/bagistoPackagistOSS Libraries
bagistowebkul
On-prem
Web & CMS Plugins / ecommerce-platform
bagistooss-projectWeb & CMS Pluginsaka bagisto
packagistpackage-ecosystemOSS Libraries
webkulcommercialWeb & CMS Pluginsaka bagisto, qloapps, krayin crm

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/bagisto/bagisto/security/advisories/GHSA-2mwc-h2mg-v6p8
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-21451
nvd.nist.gov
https://github.com/bagisto/bagisto/commit/f533b1cd9c80896792da60976179c95573d78b79
github.com
and 2 more references View all →

Timeline

Published
Jan 2, 2026
Last Updated
Jan 8, 2026

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