Medium severity · published Sep 8, 2026
CVE-2026-86735
snipe-it before 8.7.0 SSRF via IPv6 transition address bypass
5.0
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SN
snipe-it · grokability
before 8.7.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86735
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86735
Vendor Advisory
https://github.com/grokability/snipe-it/security/advisories/GHSA-5j6m-rr83-rpj7
Third Party Advisory
https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-ssrf-via-ipv6-transition-address-bypass
More from snipe-it
9.6
CVE-2026-86751
Snipe-IT before 8.7.0 Arbitrary File Read and SSRF via Markdown
8.8
CVE-2026-116201
Snipe-IT before 8.5.0 SAML Assertion Replay via Race Condition
8.8
CVE-2026-85617
snipe-it before 8.6.3 Authorization Bypass via Bulk Delete
8.8
CVE-2026-55643
Snipe-IT: Tenant Isolation Bypass in FMCS Floater Mode
8.8
CVE-2026-55483
Snipe-IT: Privilege Escalation via Missing admin Permission Check in User Creation