CVE-2025-27380CWE-79

HTML Injection Leading to Script Execution in Altium Enterprise Server

High · published January 22, 2026

CVSS v3.1
7.6
EPSS
0%
Percentile
18.1
In the wild
Unconfirmed
What it is

⚡ An authenticated attacker can execute arbitrary JavaScript in the victim’s browser with just a crafty HTML injection! This vulnerability in Altium Enterprise Server 7.0.3 is no small matter. 🔥 Think of it like slipping a sneaky message into a restaurant menu – if the staff doesn’t check the order before handing it out, any customer could end up with a hidden surprise! If exploited, this vulnerability could lead to session hijacking, data theft, or even spreading malicious code to other users. An attacker could manipulate the victim's browser, potentially leading to devastating consequences for both the victim and the organization.

Put simply

Think of it like slipping a sneaky message into a restaurant menu – if the staff doesn’t check the order before handing it out, any customer could end up with a hidden surprise! This HTML injection flaw allows an authenticated user to insert arbitrary JavaScript into the web application, which then executes in the context of another user's browser. This means malicious scripts can run without the victim knowing, quietly collecting sensitive information or executing other harmful actions.

What to do

If exploited, this vulnerability could lead to session hijacking, data theft, or even spreading malicious code to other users. An attacker could manipulate the victim's browser, potentially leading to devastating consequences for both the victim and the organization. To mitigate this risk, immediately update to the patched version of Altium Enterprise Server. Also, implement input validation and sanitize all user-generated content to ensure no arbitrary HTML can be injected in the future. You've got this! By taking these steps, you'll be one step closer to securing your system like a pro. 🛡️

The record
Technical detail
CVSS v3.1
7.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00269 · 18.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-01-22T01:28Z
EPSS history
Timeline
  • 22 JAN 01:28Z
    HTML Injection Leading to Script Execution in Altium Enterprise Server
    cvelistv5