---
id: CVE-2026-86738
title: >-
  Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the
  Custom CSS field due to incomplete sanitization that reverses HTML encoding on
  greater-than and double-quote characters
summary: >-
  Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the
  Custom CSS field due to incomplete sanitization that reverses HTML encoding on
  greater-than and double-quote characters. Superusers can plant malicious CSS
  paylo…
severity: high
cvss: 8.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
vendor: snipeitapp
product: snipe-it
affected:
  - 'snipe-it >= 3.0.0, < 8.7.0'
patched:
  - snipe-it 8.7.0
published: '2026-09-08'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T13:06:27.157'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86738'
references:
  - url: >-
      https://github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-css-injection-via-custom-css
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-08T15:30:12.976661Z'
ingestedAt: '2026-09-08T15:33:26.987Z'
epss: 0.00487
epssPercentile: 0.39362
---

## Overview

Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.

## Affected

- `snipe-it >= 3.0.0, < 8.7.0`

## Remediation

Upgrade past the affected range:

- `snipe-it 8.7.0`