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

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

- **Severity:** Medium 6.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N`)
- **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:** Yes
- **Published:** 10 Jul 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-w7qw-5wfv-gwx9

## 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 (Improper Neutralization of Input During Web Page Generation)

## 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 | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `snipe/snipe-it` | Packagist | All versions | 8.6.2 |
| `snipe/snipe-it` | Packagist | All versions | 8.6.2 |

Products: Snipeitapp Snipe-It.

## How do I fix CVE-2026-55481?

Upgrade snipe/snipe-it to 8.6.2 or later.

## Is CVE-2026-55481 being exploited?

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

## Other vulnerabilities in Snipeitapp Snipe-It

- [CVE-2025-63601](https://insights.sbomify.com/CVE-2025-63601/): File upload in n/a (critical 9.9)
- [CVE-2026-37709](https://insights.sbomify.com/CVE-2026-37709/): Snipe-IT has insecure permissions in file uploads (critical 9.8)
- [CVE-2026-86738](https://insights.sbomify.com/CVE-2026-86738/): Snipe-IT before 8.7.0 CSS Injection via Custom CSS (critical 9.3)
- [CVE-2026-116199](https://insights.sbomify.com/CVE-2026-116199/): Snipe-IT before 8.6.3 Authentication Bypass via Google SSO Callback (critical 9.2)
- [CVE-2022-1380](https://insights.sbomify.com/CVE-2022-1380/): Stored Cross Site Scripting vulnerability in Item name parameter in snipe/snipe-it (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55481 and fix it if it is affected.

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

Affected packages and fixed versions:
- snipe/snipe-it (Packagist): affected all versions; fixed in 8.6.2
- snipe/snipe-it (Packagist): affected all versions; fixed in 8.6.2

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-2026-55481/ (Markdown: https://insights.sbomify.com/CVE-2026-55481/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55481
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55481
- OSV: https://osv.dev/vulnerability/CVE-2026-55481

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-55481/
Summaries are generated and may contain mistakes; the official description above is the record.