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CVE-2026-55466— Snipe-IT: Stored XSS via inline-served attachment

Quick assessment

Affected
grokability snipe-it
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grokability Snipe-IT是Grokability公司开源的一套开源IT资产/许可证管理系统。 Grokability Snipe-IT 8.6.2之前版本存在跨站脚本漏洞，该漏洞源于UploadFileRequest仅在PHP finfo报告image/svg+xml时清理SVG内容，且UploadedFilesController在没有使用StorageHelper::allowSafeInline()的情况下内联提供附件，可能允许低权限用户上传活跃的XHTML或XML内容，这些内容随后

AI Predicted 7.8 Difficulty: Easy EPSS 0.44% · P38

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
grokability snipe-it < 8.6.2 affected
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I. Basic Information for CVE-2026-55466

Vulnerability Information
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Vulnerability Title
Snipe-IT: Stored XSS via inline-served attachment
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Grokability Snipe-IT 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grokability Snipe-IT是Grokability公司开源的一套开源IT资产/许可证管理系统。 Grokability Snipe-IT 8.6.2之前版本存在跨站脚本漏洞，该漏洞源于UploadFileRequest仅在PHP finfo报告image/svg+xml时清理SVG内容，且UploadedFilesController在没有使用StorageHelper::allowSafeInline()的情况下内联提供附件，可能允许低权限用户上传活跃的XHTML或XML内容，这些内容随后
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
grokability snipe-it < 8.6.2 -

II. Public POCs for CVE-2026-55466

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III. Intelligence Information for CVE-2026-55466

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Patches & Fixes for CVE-2026-55466 (1)

Vendor Advisories for CVE-2026-55466 (1)

Vendor Pages for CVE-2026-55466 (1)

Same Patch Batch · grokability · 2026-07-10 · 18 CVEs total

CVE-2026-54329 8.5 HIGH Snipe-IT: Cross-Tenant Accessory Injection in Snipe-IT API
CVE-2026-55516 7.7 HIGH Snipe-IT: Cross-company asset maintenance re-parenting via API update
CVE-2026-55460 7.1 HIGH Snipe-IT: Authorization bypass on bulk editing users
CVE-2026-55469 6.5 MEDIUM Snipe-IT: Path traversal vulnerability via CSV import `image` field
CVE-2026-55461 6.1 MEDIUM Snipe-IT: Open Redirect After User Edit
CVE-2026-55475 5.7 MEDIUM Snipe-IT: Import created_by can be overwritten
CVE-2026-55515 5.0 MEDIUM Snipe-IT: Cross-company deletion of pending checkout acceptances via unscoped report endpo
CVE-2026-55472 4.3 MEDIUM Snipe-IT: API Location Creation Bypasses FMCS Parent-Child Company Boundary Validation
CVE-2026-55462 4.3 MEDIUM Snipe-IT: Authorization bypass on print inventory page
CVE-2026-55478 Snipe-IT: Missing object-level authorization in Kits API
CVE-2026-55474 Snipe-IT: Directory traversal in displaySig
CVE-2026-55452 Snipe-IT: CSV formula injection in Activity Report export
CVE-2026-55479 Snipe-IT: Incorrect permission for legacy license checkin API
CVE-2026-55464 Snipe-IT: Stored XSS via Markdown custom field
CVE-2026-55843 Snipe-IT: Improper Privilege Management
CVE-2026-55481 Snipe-IT: CSS Injection via `header_color` Setting
CVE-2026-55476 Snipe-IT: Unauthorized Asset Request Cancellation via Unguarded cancel_by_admin Parameter

IV. Related Vulnerabilities

Same product: snipe-it
Same vendor: grokability
Same weakness: CWE-79