CVE-2026-86735 json
snipe-it before 8.7.0 SSRF via IPv6 transition address bypass
published 2mo ago modified last mo. also EUVD-2026-72871 , GHSA-5j6m-rr83-rpj7
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository grokability/snipe-it. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 5.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- grokability snipe-it 8.7.0
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 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 |
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N |
| CNA | 4.0 | 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 | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N |
Affected products
- grokability snipe-it
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/grokability/snipe-it/security/advisories/GHSA-5j6m-rr83-rpj7
vendor-advisory, mitigation, advisory
-
vulncheck.com
/advisories/snipe-it-before-8.7.0-ssrf-via-ipv6-transition-address-bypass
third-party-advisory
Sources
- CVE List CVE-2026-86735
- NVD CVE-2026-86735
- Maintainer advisory GHSA-5j6m-rr83-rpj7
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of grokability/snipe-it published their own advisory on GitHub. Reviewed sources take precedence over it.