---
id: "CVE-2026-128041"
page: "https://infrastack.ai/live/CVE-2026-128041"
kind: "vulnerability"
aliases: ["CVE-2026-128041"]
title: "OpenMage magento-lts: RSS feed XSS lets a guest take over admin accounts"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "magento-lts", "fixed": [], "affected": "", "ecosystem": "composer"}]
ecosystems: ["composer"]
tags: ["magento", "magento-lts", "openmage", "package", "php", "self-hosted"]
not_affected_if: ["magento-lts-patched", "other-magento-distribution", "reviews-disabled"]
published_at: "2026-11-13T10:18:09+00:00"
first_seen_at: "2026-11-13T10:47:32+00:00"
updated_at: "2026-11-13T10:48:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-128041", "first_seen_at": "2026-11-13T10:47:32+00:00"}]
exploit_sources: []
---

# OpenMage magento-lts: RSS feed XSS lets a guest take over admin accounts

Link for people: https://infrastack.ai/live/CVE-2026-128041 (this .md is for agents)

OpenMage magento-lts serves its RSS feeds as text/html and does not escape review data in them. An unauthenticated guest can post a product review containing script, which runs in the browser of an administrator who opens the pending-reviews feed, enabling admin account takeover.

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

## Affected

- composer:magento-lts affected range not listed fixed no fixed version listed

## How to check

- Check the installed magento-lts version in composer.json or the OpenMage package lock; versions below `20.18.2` on the 20.x line, or below `21.0.0-beta3` on the 21.x beta line, are in the affected range.
- Confirm whether product reviews are enabled for guests on the store.

## Fix

- magento-lts: move to `20.18.2` or later on the 20.x line.
- magento-lts 21.x beta: move to `21.0.0-beta3` or later.

## Timeline

- 2026-11-13T10:47:32+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-128041

## Documents

- [advisory] Vendor advisory: github.com https://github.com/OpenMage/magento-lts/security/advisories/GHSA-j9c5-pcvx-jx9x
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-stored-xss-via-rss-review-feed
- [fix] Patch: github.com https://github.com/OpenMage/magento-lts/commit/34e88f5447dff22e4ddc8cb0952d934ac3fdd15b

## From the sources

OpenMage magento-lts before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 serves RSS feeds with a text/html content type and does not escape feed entry data, leading to stored cross-site scripting. An unauthenticated guest can submit a product review with script in the nickname, title or text that executes when an administrator opens the pending-reviews feed, enabling admin account takeover.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_