CVE-2025-27380 HTML Injection Leading to Script Execution in Altium Enterprise Server
An authenticated attacker can execute arbitrary JavaScript in victims' browsers via HTML injection in Altium Enterprise Server.
- 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
- None listed
What is CVE-2025-27380?
CVE-2025-27380 is a high-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
HTML injection in Project Release in Altium Enterprise Server (AES) 7.0.3 on all platforms allows an authenticated attacker to execute arbitrary JavaScript in the victim’s browser via crafted HTML content.
Weakness: CWE-79
Which versions are affected by CVE-2025-27380?
It affects 1 product.
Products include Altium On-Prem Enterprise Server.
How do I fix CVE-2025-27380?
No fix has been published for CVE-2025-27380 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-27380 being exploited?
There is no known exploitation of CVE-2025-27380 in the wild and no public exploit code.
Other vulnerabilities in Altium AES
- CVE-2026-11414 Hardcoded credentials in Altium Enterprise Server
- CVE-2026-11420 Path Traversal in Altium Enterprise Server NIS Allows Unauthenticated Arbitrary File Write and File Read
- CVE-2026-11419 Path Traversal in Altium Enterprise Server Vault UploadController Allows Arbitrary File Write
- CVE-2025-27378 SQL Injection in AES Due to Inactive SQL Parsing Configuration
- CVE-2026-1010 Stored Cross-Site Scripting in Altium Enterprise Server Workflow Engine Allows Privilege Escalation
Sources
Also known as GHSA-7q9f-ppr5-2mfg.