CVE-2026-21451

Bagisto has HTML Filter Bypass that Enables Stored XSS

HIGH
8.4
CVSS Score
Published: January 2, 2026 at 08:37 PM UTC
Updated: June 17, 2026 at 10:18 AM UTC
2 products affected across 2 vendorsBagistoBagisto

Using bagisto by bagisto?

Get instant alerts when new vulnerabilities affect bagisto - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.4
Exploit prediction
EPSS 0.6%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.3.10
v < 2.3.10
Affected range stops below 2.3.10, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/bagisto/bagisto/security/advisories/GHSA-2mwc-h2mg-v6p8

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card