CVE-2026-55481 Snipe-IT: CSS Injection via `header_color` Setting

Medium 6.2 Published 10 Jul 2026 Updated 14 Jul 2026

A superadmin can inject arbitrary CSS via branding settings, potentially executing scripts if CSP is disabled, affecting authenticated users.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2026-55481?

CVE-2026-55481 is a medium-severity cross-site scripting vulnerability in Snipeitapp Snipe-It, published on 10 Jul 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Snipe-IT is an IT asset/license management system. Prior to 8.6.2, default.blade.php renders header_color and related branding color settings inside a CSS style block with HTML escaping that is insufficient for the CSS context, allowing a superadmin to inject arbitrary CSS that affects authenticated users on subsequent page loads when Content Security Policy is disabled. This issue is fixed in version 8.6.2.

Weakness: CWE-79

Which versions are affected by CVE-2026-55481?

2 open source packages ship an affected version, including snipe/snipe-it. It affects 1 product.

Package	Affected	Fixed in
`snipe/snipe-it` Packagist	All versions	`8.6.2`
`snipe/snipe-it` Packagist	All versions	`8.6.2`

Products include Snipeitapp Snipe-It.

How do I fix CVE-2026-55481?

Upgrade snipe/snipe-it to 8.6.2 or later.

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-2026-55481 being exploited?

There is no known exploitation of CVE-2026-55481 in the wild and no public exploit code.

All Snipeitapp Snipe-It vulnerabilities

Sources

Also known as GHSA-w7qw-5wfv-gwx9.