CVE-2026-55481

Snipe-IT: CSS Injection via `header_color` Setting

Published Jul 10, 2026 CVSS 4.0 · 6.2 Medium EPSS < 1% KEV · Not listed
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.

Analysis

AI-generated

Technical impact

The vulnerability exists in Snipe‑IT prior to version 8.6.2 where the header_color and related branding settings are rendered inside a style block without proper CSS‑context escaping. Because the HTML escape is insufficient for CSS, a super‑administrator can inject arbitrary CSS that is then executed in the browsers of all authenticated users on subsequent page loads when a restrictive Content Security Policy is not enforced. This allows the attacker to alter or suppress UI elements, potentially masking critical information or creating phishing‑like interfaces. The flaw is a classic cross‑site scripting issue, classified as CWE‑79.

Affected Systems

All Snipe‑IT deployments running any version earlier than 8.6.2 are affected. The software is maintained by the vendor grokability, and the issue was fixed in the 8.6.2 release which is available on GitHub.

Risk and Exploitability

The CVSS score of 6.2 indicates moderate severity, while the EPSS score of less than 1 % shows a very low likelihood of exploitation in the wild. The vulnerability is not listed in CISA’s KEV catalog. Exploitation requires that the attacker already possesses super‑administrator privileges within the application and that CSP does not block inline styles. Under those conditions the risk is limited to UI manipulation for authenticated users, but the potential for social engineering and UI confusion warrants prompt remediation.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade the Snipe‑IT instance to version 8.6.2 or later, which contains the fix for the header_color injection issue.
  • Restrict super‑administrator privileges or limit which users can modify branding settings until the patch is deployed.
  • Enforce a Content Security Policy that disallows inline styles, for example by adding style-src 'self' to the policy headers.

Generated by OpenCVE AI on August 1, 2026 at 12:14 UTC.

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-w7qw-5wfv-gwx9 Snipe-IT has CSS Injection via `header_color` Setting
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Grokability
Grokability snipe-it
Vendors & Products Grokability
Grokability snipe-it
Type Values Removed Values Added
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.
Title Snipe-IT: CSS Injection via `header_color` Setting
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 6.2, 'vector': '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'}

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 14, 2026, 1:51 PM
Reserved
Jun 16, 2026, 10:28 PM
Status
Analyzed
Published
Jul 10, 2026, 8:16 PM
Modified
Oct 25, 2026, 3:10 PM