CVE-2026-86735

snipe-it before 8.7.0 SSRF via IPv6 transition address bypass

Published Sep 8, 2026 CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Grokability
Grokability snipe-it
Vendors & Products Grokability
Grokability snipe-it
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title snipe-it before 8.7.0 SSRF via IPv6 transition address bypass
First Time appeared Snipeitapp
Snipeitapp snipe-it
Weaknesses CWE-918
CPEs cpe:2.3:a:snipeitapp:snipe-it:*:*:*:*:*:*:*:*
Vendors & Products Snipeitapp
Snipeitapp snipe-it
References
Metrics cvssV3_1

{'score': 5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 8, 2026, 3:37 PM
Reserved
Sep 8, 2026, 11:31 AM
Status
Analyzed
Published
Sep 8, 2026, 4:18 PM
Modified
Sep 9, 2026, 1:45 PM