---
id: "CVE-2026-121733"
kind: "vulnerability"
aliases: ["CVE-2026-121733"]
title: "Bagisto: stored XSS via RMA message uploads runs script for admins"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["bagisto", "e-commerce", "laravel", "package", "self-hosted"]
not_affected_if: ["bagisto-2.4.5-or-later", "rma-disabled"]
published_at: "2026-11-03T23:17:37+00:00"
first_seen_at: "2026-11-03T23:45:15+00:00"
updated_at: "2026-11-03T23:45:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121733", "first_seen_at": "2026-11-03T23:45:15+00:00"}]
---

# Bagisto: stored XSS via RMA message uploads runs script for admins

Bagisto, a Laravel e-commerce platform, lets logged-in customers upload HTML files as RMA message attachments without checking the file type. A malicious HTML attachment runs JavaScript in the shop's origin when an administrator opens it.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Bagisto version in `composer.lock` or the installed `bagisto/bagisto` package; versions before `2.4.5` are affected.
- Look for the `/storage/rma-conversation/` path on the shop and see whether uploaded files are served from it.

## Fix

- Bagisto: upgrade to `2.4.5` or later (per the advisory's 'before 2.4.5' range).

## Timeline

- 2026-11-03T23:45:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121733

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/bagisto-before-2.4.5-stored-xss-via-rma-conversation-attachment-upload
- [fix] Patch: github.com https://github.com/bagisto/bagisto/commit/204e43c26705b66ef2ddfb2a9eebb25f5e8f6a2c
- [fix] Patch: github.com https://github.com/bagisto/bagisto/commit/e28db3e8c53a94a99cf153ac338466720acd9004
- [fix] Release notes: github.com https://github.com/bagisto/bagisto/releases/tag/v2.4.5

## From the sources

Bagisto before 2.4.5 contains a stored cross-site scripting vulnerability that allows authenticated customers to upload HTML files via the RMA send-message endpoint without type or extension validation. Attackers can upload a .html attachment containing JavaScript served under /storage/rma-conversation/, executing script in the shop's origin when an administrator opens it.

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