Snipe-IT: Stored XSS via Inline XML Rendering in the Uploaded Files API (CVE-2026-63498) | HOL Guard CVE

High · CVSS 8.7CVE-2026-63498GHSA-396X-XMVH-P563

Snipe-IT: Stored XSS via Inline XML Rendering in the Uploaded Files API

Answer in brief

CVE-2026-63498 records a High severity (CVSS 8.7) vulnerability in Snipe-IT: Stored XSS via Inline XML Rendering in the Uploaded Files API. The current sources do not mark it as known exploited. The current feed maps snipe/snipe-it (composer), grokability/snipe-it (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.7
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps snipe/snipe-it (composer), grokability/snipe-it (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
snipe/snipe-itcomposer	<8.7.0	8.7.0
grokability/snipe-itgeneric	<8.7.0	8.7.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for snipe/snipe-it, grokability/snipe-it.
Review the reported fix. Update snipe/snipe-it to 8.7.0; grokability/snipe-it to 8.7.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.