---
id: CVE-2026-86735
title: >-
  snipe-it versions before 8.7.0 contain a server-side request forgery
  vulnerability in the ExternalUrl validation rule that fails to detect IPv6
  transition addresses encoding private IPv4 targets
summary: >-
  snipe-it versions before 8.7.0 contain a server-side request forgery
  vulnerability in the ExternalUrl validation rule that fails to detect IPv6
  transition addresses encoding private IPv4 targets. Attackers with super-admin
  privileges can…
severity: medium
cvss: 5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-918
vendor: snipeitapp
product: snipe-it
affected:
  - snipe-it < 8.7.0
patched:
  - snipe-it 8.7.0
published: '2026-09-08'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T13:45:44.263'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86735'
references:
  - url: >-
      https://github.com/grokability/snipe-it/security/advisories/GHSA-5j6m-rr83-rpj7
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-ssrf-via-ipv6-transition-address-bypass
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T15:37:37.059741Z'
ingestedAt: '2026-09-08T15:33:26.987Z'
epss: 0.00313
epssPercentile: 0.21567
---

## Overview

snipe-it versions before 8.7.0 contain a server-side request forgery vulnerability in the ExternalUrl validation rule that fails to detect IPv6 transition addresses encoding private IPv4 targets. Attackers with super-admin privileges can configure webhook URLs using NAT64, 6to4, or Teredo transition addresses to bypass SSRF guards and access internal services or cloud metadata endpoints.

## Affected

- `snipe-it < 8.7.0`

## Remediation

Upgrade past the affected range:

- `snipe-it 8.7.0`