---
id: "CVE-2026-128824"
page: "https://infrastack.ai/live/CVE-2026-128824"
kind: "vulnerability"
aliases: ["CVE-2026-128824"]
title: "Red Hat Quay: crafted URL runs JavaScript in a user's browser"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["container-registry", "infrastructure", "red-hat-quay", "self-hosted"]
not_affected_if: ["no-browser-access"]
published_at: "2026-11-13T09:17:34+00:00"
first_seen_at: "2026-11-13T09:49:53+00:00"
updated_at: "2026-11-13T09:52:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-128824", "first_seen_at": "2026-11-13T09:49:53+00:00"}]
exploit_sources: []
---

# Red Hat Quay: crafted URL runs JavaScript in a user's browser

Link for people: https://infrastack.ai/live/CVE-2026-128824 (this .md is for agents)

Red Hat Quay's v1 registry API error handler reflects the image_id path segment back in an HTML response without escaping. A remote attacker who tricks a logged-in user into opening a crafted link can run JavaScript in that user's browser within the Quay origin and potentially take over their session.

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

## Timeline

- 2026-11-13T09:49:53+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-128824

## From the sources

A flaw was found in Red Hat Quay. The v1 registry API error handler reflects the attacker-supplied image_id path segment in a response served as text/html, allowing a reflected cross-site scripting (XSS) attack. By tricking a user into visiting a specially crafted URL, a remote attacker can execute arbitrary JavaScript in the victim's browser within the Quay origin, potentially compromising the user's session.

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