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Snipe-IT CVE-2026-86735

| EUVDEUVD-2026-72871 MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-09-08 VulnCheck GHSA-m3v2-6c3r-vqh9
SSRF Snipe It Grokability
5.9
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
5.9 MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.0 MEDIUM

Super-admin privilege (PR:H) and transition-capable network environment (AC:H) required; confidentiality high via potential metadata credential exposure, integrity low.

3.1 AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N
4.0 AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Patch available
Sep 08, 2026 - 16:17 EUVD
Analysis Generated
Sep 08, 2026 - 15:57 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Server-side request forgery in Snipe-IT before 8.7.0 allows a super-admin to bypass the ExternalUrl webhook SSRF guard by supplying IPv6 transition addresses (NAT64, 6to4, or Teredo) that encode private IPv4 targets. The validation logic only checks IPv4 address representations, so transition-encoded addresses such as 64:ff9b::169.254.169.254 pass unchallenged, enabling the server to reach internal services or cloud metadata endpoints like the AWS IMDSv1 API. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation unconditionally requires a super-admin account in Snipe-IT (PR:H) - the highest privilege level in the application - either through a malicious insider or a compromised super-admin session. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N) correctly reflects the primary limiting factors. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Snipe-IT to version 8.7.0 or later, which corrects the ExternalUrl validation rule to decode and evaluate IPv6 transition address encodings before applying SSRF blocklist checks. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-918 – Server-Side Request Forgery (SSRF)

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CVE-2026-86735 vulnerability details – vuln.today
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