# CVE-2026-1008: Stored Cross-Site Scripting in Altium Live User Profile Fields

> Authenticated users can inject scripts into Altium Live profiles, enabling session theft or phishing when others view the page.

- **Severity:** High 7.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Jan 2026
- **Updated:** 19 Jan 2026
- **Also known as:** GHSA-2vwg-39m6-fw44

## What is CVE-2026-1008?

CVE-2026-1008 is a high-severity cross-site scripting vulnerability in Altium Live, published on 15 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A stored cross-site scripting (XSS) vulnerability exists in the user profile text fields of Altium 365. Insufficient server-side input sanitization allows authenticated users to inject arbitrary HTML and JavaScript payloads using whitespace-based attribute parsing bypass techniques.
The injected payload is persisted and executed when other users view the affected profile page, potentially allowing session token theft, phishing attacks, or malicious redirects. Exploitation requires an authenticated account and user interaction to view the crafted profile.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-1008?

It affects 1 product.


Products: Altium Altium Live.

## How do I fix CVE-2026-1008?

No fix has been published for CVE-2026-1008 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1008 being exploited?

There is no known exploitation of CVE-2026-1008 in the wild and no public exploit code.

## Other vulnerabilities in Altium Live

- [CVE-2026-1009](https://insights.sbomify.com/CVE-2026-1009/): Stored Cross-Site Scripting in Altium Live Forum Leading to Cross-Customer Data Exposure (critical 9.0)
- [CVE-2026-1011](https://insights.sbomify.com/CVE-2026-1011/): Stored Cross-Site Scripting in Altium Live Support Center Comment Endpoint (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1008 and fix it if it is affected.

What it is: CVE-2026-1008 is a high-severity cross-site scripting vulnerability in Altium Live, published on 15 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-1008 in the wild and no public exploit code.

Affected product: Altium Live. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-1008/ (Markdown: https://insights.sbomify.com/CVE-2026-1008/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1008
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1008
- OSV: https://osv.dev/vulnerability/CVE-2026-1008

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1008/
Summaries are generated and may contain mistakes; the official description above is the record.