CVE-2026-73530Flyto2 Core < 2.28.0 SSRF Guard Bypass via is_private_ip()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Flyto2 Core before 2.28.0 contains a server-side request forgery guard bypass vulnerability that allows attackers to reach internal services by supplying URLs using the unblocked IPv6 address `::` which the kernel routes to loopback identically to `0.0.0.0`. Attackers can submit requests or trigger 302 redirects to ` to bypass the private IP range and blocked hostname checks in `is_private_ip()`, reaching services bound to IPv6 loopback across the `http.get`, `http.request`, and `http.batch` modules.
- CVSS
- 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Aug 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
flytohub flyto-core flytohub:flyto_core (from the name) | before 2.28.0 | CNA record |
References
- https://github.com/flytohub/flyto-core/security/advisories/GHSA-gc4h-hj7x-gp5pvendor-advisory
- https://github.com/flytohub/flyto-core/releases/tag/v2.28.0release-notes
- https://www.vulncheck.com/advisories/flyto2-core-ssrf-guard-bypass-via-is-private-ipthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.