SSRF in Grokability Snipe-It
CVE-2026-86735
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/grokability/snipe-it/security/advisories/GHSA-5j6m-rr83-rpj7 (vendor-advisory, Mitigation, Vendor Advisory)
- www.vulncheck.com/advisories/snipe-it-before-8.7.0-ssrf-via-ipv6-transition-add… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-86735?
- CVE-2026-86735 is a medium-severity vulnerability in Grokability Snipe-It, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.0/10. Published 2026-09-08.
- How severe is CVE-2026-86735?
- Medium severity. CVSS v3 base score is 5.0 out of 10.