# CVE-2025-27379: Stored Cross-Site Scripting in AES BOM Viewer

> An authenticated attacker can inject JavaScript into schematic descriptions, leading to code execution when viewed in the BOM Viewer.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H`)
- **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:** 22 Jan 2026
- **Updated:** 22 Jan 2026
- **Also known as:** GHSA-w5qj-7xqm-q39c

## What is CVE-2025-27379?

CVE-2025-27379 is a medium-severity cross-site scripting vulnerability in Altium AES, published on 22 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 in the BOM Viewer in Altium AES 7.0.3 allows an authenticated attacker to inject arbitrary JavaScript into the Description field of a schematic, which is executed when the BOM Viewer renders the affected content.

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

## Which versions are affected by CVE-2025-27379?

It affects 1 product.


Products: Altium On-Prem Enterprise Server.

## How do I fix CVE-2025-27379?

No fix has been published for CVE-2025-27379 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-27379 being exploited?

There is no known exploitation of CVE-2025-27379 in the wild and no public exploit code.

## Other vulnerabilities in Altium AES

- [CVE-2026-11414](https://insights.sbomify.com/CVE-2026-11414/): Hardcoded credentials in Altium Enterprise Server (critical 10.0)
- [CVE-2026-11420](https://insights.sbomify.com/CVE-2026-11420/): Path Traversal in Altium Enterprise Server NIS Allows Unauthenticated Arbitrary File Write and File Read (critical 10.0)
- [CVE-2026-11419](https://insights.sbomify.com/CVE-2026-11419/): Path Traversal in Altium Enterprise Server Vault UploadController Allows Arbitrary File Write (critical 9.4)
- [CVE-2025-27378](https://insights.sbomify.com/CVE-2025-27378/): SQL Injection in AES Due to Inactive SQL Parsing Configuration (high 8.6)
- [CVE-2026-1010](https://insights.sbomify.com/CVE-2026-1010/): Stored Cross-Site Scripting in Altium Enterprise Server Workflow Engine Allows Privilege Escalation (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27379 and fix it if it is affected.

What it is: CVE-2025-27379 is a medium-severity cross-site scripting vulnerability in Altium AES, published on 22 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-2025-27379 in the wild and no public exploit code.

Affected product: Altium AES. 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-2025-27379/ (Markdown: https://insights.sbomify.com/CVE-2025-27379/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27379
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27379
- OSV: https://osv.dev/vulnerability/CVE-2025-27379

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27379/
Summaries are generated and may contain mistakes; the official description above is the record.