---
id: "CVE-2026-126954"
page: "https://infrastack.ai/live/CVE-2026-126954"
kind: "vulnerability"
aliases: ["CVE-2026-126954"]
title: "Glance: stored XSS lets malicious extension endpoints run script in dashboards"
severity: "medium"
cvss: 4.7
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["dashboards", "glance", "other", "self-hosted"]
not_affected_if: ["default-config", "no-extension-widgets", "trusted-endpoints-only"]
published_at: "2026-11-13T10:18:02+00:00"
first_seen_at: "2026-11-13T10:47:28+00:00"
updated_at: "2026-11-13T10:58:47+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126954", "first_seen_at": "2026-11-13T10:47:28+00:00"}]
exploit_sources: []
---

# Glance: stored XSS lets malicious extension endpoints run script in dashboards

Link for people: https://infrastack.ai/live/CVE-2026-126954 (this .md is for agents)

Glance, a self-hosted dashboard, trusts a Widget-Title-URL response header from extension endpoints, so a malicious endpoint can inject javascript: URLs. When a user clicks the widget title, the script runs in the dashboard and can read pages and send content elsewhere.

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

## How to check

- Check the installed Glance version with `glance --version` or the image tag in your deployment; affected versions are `0.7.9` up to but not including `0.8.8`.
- Review which extension widgets are configured in your Glance config file and whether any point to untrusted endpoints.

## Fix

- Glance: upgrade to `0.8.8` or later.

## Timeline

- 2026-11-13T10:47:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126954

## Documents

- [advisory] Vendor advisory: github.com https://github.com/glanceapp/glance/security/advisories/GHSA-96x7-3hwp-rcfc
- [advisory] Vendor advisory: github.com https://github.com/glanceapp/glance/security/advisories/GHSA-f2c4-p935-ffpj
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/glance-0.7.9-before-0.8.8-stored-xss-via-widget-title-url-header
- [fix] Patch: github.com https://github.com/glanceapp/glance/commit/e19081cfa029edbe16b1354ffe03076a8cdf0244
- [fix] Release notes: github.com https://github.com/glanceapp/glance/releases/tag/v0.8.8

## From the sources

Glance from 0.7.9 before 0.8.8 contains a stored cross-site scripting vulnerability that allows malicious extension endpoints to inject javascript: URLs via the Widget-Title-URL response header. Attackers controlling an extension endpoint can execute script when users click the widget title, reading dashboard pages through same-origin requests and exfiltrating content.

---

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