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CVE-2026-21451

Webkul Bagisto cross-site scripting (XSS)

8.4 HIGHPublic exploitEPSS 0.56%
  1. Published2 Jan 2026

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredHigh
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Affected products

Webkul Bagisto< 2.3.10

Remediation

Fixed in
Webkul Bagisto≥ 2.3.10

References

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Frequently asked

Is CVE-2026-21451 being actively exploited?

CVE-2026-21451 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.56%.

How severe is CVE-2026-21451?

CVE-2026-21451 has a CVSS 3.1 base score of 8.4, rated high. EPSS estimates a 0.56% probability of exploitation.

Which products are affected by CVE-2026-21451?

Affected products include Webkul Bagisto.

How do I fix CVE-2026-21451?

Upgrade affected software to a fixed version, for example Webkul Bagisto 2.3.10 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-21451 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.