CVE-2026-86735

snipe-it before 8.7.0 SSRF via IPv6 transition address bypass

At a glance

Severity: MEDIUM 5.9
EPSS: EPSS 0.31 % · percentile 24 (2026-10-27)
State: PUBLISHED
Published: 2026-09-08
Updated: 2026-09-08
Assigner: VulnCheck
NVD status: Analyzed

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

Version	Score	Vector	Scored by
CVSS 4.0	MEDIUM 5.9	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
CVSS 3.1	MEDIUM 5.0	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N	VulnCheck
CVSS 4.0	MEDIUM 5.9	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	NVD · disclosure@vulncheck.com (Secondary)
CVSS 3.1	MEDIUM 5.0	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N	NVD · disclosure@vulncheck.com (Primary)

Weaknesses (CWE)

CWE-918

European references

ENISA EUVD · EUVD-2026-72871
GCVE · GCVE-0-2026-86735

Affected configurations (NVD CPE)

cpe:2.3:a:snipeitapp:snipe-it:*:*:*:*:*:*:*:* < 8.7.0

Affected products

Product	Versions
grokability · snipe-it	affected 0 < 8.7.0 ; unaffected 8.7.0

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD