CVE-2026-63498 Snipe-IT: Stored XSS via Inline XML Rendering in the Uploaded Files API
Authenticated attackers can execute JavaScript in victims' browsers via malicious XML attachments, leading to session hijacking or data theft.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-63498?
CVE-2026-63498 is a high-severity cross-site scripting vulnerability in Snipeitapp Snipe-It, published on 24 Sep 2026. Any signed-in user can exploit it over the network, 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 8.7.0, the uploaded-files API endpoint GET /api/v1/{object_type}/{id}/files/{file_id} allows an authenticated user with file-management access to upload XML and XSLT attachments and request them with the inline=true parameter. The app/Http/Controllers/Api/UploadedFilesController.php show() path does not apply the safe-inline allowlist used by the equivalent web controller, so the browser can process an attacker-controlled xml-stylesheet reference and execute JavaScript generated by the stylesheet in the Snipe-IT origin. A victim who is authorized to view the object must open the attachment URL, after which the script can read same-origin data and perform authenticated actions with the victim's privileges. This issue is fixed in version 8.7.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-63498?
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 | 8.7.0 |
snipe/snipe-it Packagist | All versions | 8.7.0 |
Products include Snipeitapp Snipe-It.
How do I fix CVE-2026-63498?
Upgrade snipe/snipe-it to 8.7.0 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-2026-63498 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63498 exists.
Other vulnerabilities in Snipeitapp Snipe-It
- CVE-2025-63601 File upload in n/a
- CVE-2026-37709 Snipe-IT has insecure permissions in file uploads
- CVE-2026-86738 Snipe-IT before 8.7.0 CSS Injection via Custom CSS
- CVE-2026-116199 Snipe-IT before 8.6.3 Authentication Bypass via Google SSO Callback
- CVE-2022-1380 Stored Cross Site Scripting vulnerability in Item name parameter in snipe/snipe-it
Sources
Also known as GHSA-396x-xmvh-p563.