CVE-2026-86735Public exploitNetwork attack vector

SSRF via unchecked IPv6 transition addresses

Published Sep 8, 2026 · Updated Sep 8, 2026

SSRF in Snipe-IT before 8.7.0 allows remote authenticated users to access internal services through crafted webhook URLs. The ExternalUrl rule's isPublicIp method passes NAT64, 6to4, and Teredo IPv6 addresses to PHP filter_var without extracting and rechecking their encoded private IPv4 targets. Super-admin access and corresponding transition routing are required; successful requests can read cloud instance metadata or reach and scan private-network services.

CVSS severity5.9
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Snipe-IT before 8.7.0 allows remote authenticated users to access internal services through crafted webhook URLs. The ExternalUrl rule's isPublicIp method passes NAT64, 6to4, and Teredo IPv6 addresses to PHP filter_var without extracting and rechecking their encoded private IPv4 targets. Super-admin access and corresponding transition routing are required; successful requests can read cloud instance metadata or reach and scan private-network services.

The record

CVE
CVE-2026-86735
Published
Sep 8, 2026
Updated
Sep 8, 2026
Vendor
Grokability, Inc.
Product
Snipe-IT
Classifications
CWE-918, T1046, T1552.005
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <8.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Grokability, Inc. · Snipe-ITversion=0 <8.7.0

Published CVSS scores

5.0VulnCheckCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N
5.9VulnCheckCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Discovery
T1552.005Cloud Instance Metadata API

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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