CVE-2026-86735
snipe-it before 8.7.0 SSRF via IPv6 transition address bypass
- State
- Published
- Severity
- 5.9 Medium
- Published
- Sep 8, 2026
- Updated
- Sep 8, 2026
- Reserved
- Sep 8, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 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 | VulnCheck |
| 3.1 | 5.0 Medium | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
snipe-itgrokability |
|
References
- GitHub Security Advisory (GHSA-5j6m-rr83-rpj7)vendor-advisory
- VulnCheck Advisory: snipe-it before 8.7.0 SSRF via IPv6 transition address bypassthird-party-advisory
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