CVE-2026-55466: Snipe-IT: Stored XSS via inline-served attachment
Snipe-IT is an IT asset/license management system. Prior to 8.6.2, UploadFileRequest sanitizes SVG content only when PHP finfo reports image/svg+xml and UploadedFilesController serves attachments inline without using StorageHelper::allowSafeInline(), allowing a low-privilege user to upload active XHTML or XML content that is later served same-origin and executes JavaScript in a viewer’s browser. This issue is fixed in version 8.6.2.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-55466?
The severity of CVE-2026-55466 is classified as medium with a CVSS score of 6.2.
How do I fix CVE-2026-55466?
To fix CVE-2026-55466, update Snipe-IT to version 8.6.2 or later.
What type of vulnerability is CVE-2026-55466?
CVE-2026-55466 is a stored cross-site scripting (XSS) vulnerability.
What are the potential consequences of CVE-2026-55466?
CVE-2026-55466 allows low-privilege users to upload malicious SVG files that can execute scripts in the context of other users.
Who is affected by CVE-2026-55466?
Any installations of Snipe-IT prior to version 8.6.2 are affected by CVE-2026-55466.