---
id: "CVE-2026-110802"
page: "https://infrastack.ai/live/CVE-2026-110802"
kind: "vulnerability"
aliases: ["CVE-2026-110802"]
title: "Altair GraphQL client: crafted URL runs attacker script in origin"
severity: "medium"
cvss: 6.1
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["altair", "graphql", "other", "self-hosted", "web"]
not_affected_if: ["versions-8.5.8-or-later", "versions-before-7.2.4"]
published_at: "2026-11-05T21:18:35+00:00"
first_seen_at: "2026-11-05T21:40:44+00:00"
updated_at: "2026-11-05T21:41:16+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110802", "first_seen_at": "2026-11-05T21:40:44+00:00"}]
exploit_sources: []
---

# Altair GraphQL client: crafted URL runs attacker script in origin

Link for people: https://infrastack.ai/live/CVE-2026-110802 (this .md is for agents)

Altair is a GraphQL client, and its iframe-sandbox page passes attacker-supplied script URLs into the page when opened directly. A victim who opens a crafted link runs the attacker's script in the origin serving Altair, where it can read script-accessible storage and make same-origin requests.

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

## How to check

- Check the installed Altair version in `packages/altair-iframe-sandbox` or the deployed web app's package version.
- Look for a deployment at versions from `7.2.4` up to but not including `8.5.8`.

## Fix

- Altair: move to `8.5.8`.

## Timeline

- 2026-11-05T21:40:44+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-110802

## Documents

- [advisory] Vendor advisory: github.com https://github.com/altair-graphql/altair/security/advisories/GHSA-752m-7p75-49gf
- [fix] Patch: github.com https://github.com/altair-graphql/altair/commit/53a19183ce11ca147bb990c355e14ecb1dd7cd3e
- [fix] Patch: github.com https://github.com/altair-graphql/altair/commit/bdf422bdaaaf3186170ba7f22e22c259072133d9
- [fix] Release notes: github.com https://github.com/altair-graphql/altair/releases/tag/v8.5.8

## From the sources

Altair is a GraphQL client for all platforms. From 7.2.4 until 8.5.8, packages/altair-iframe-sandbox/src/main.ts reads plugin_sandbox_opts from the iframe-sandbox query string and passes attacker-controlled scriptUrls to injectScript() in packages/altair-core/src/utils/inject.ts, which creates script elements in the page. The intended parent iframe flow places the page in an iframe with sandbox allow-scripts and without allow-same-origin, but direct navigation to a crafted iframe-sandbox URL omits that isolation and executes the supplied script in the origin serving Altair. Exploitation requires a victim to open the crafted URL, and the resulting script can access script-readable storage and make same-origin requests according to the deployment's authentication and cookie controls. This issue is fixed in version 8.5.8.

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