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TI-2026-51630 Aliases CVE-2026-73530GHSA-35jm-rm2f-hpgj

Flyto2 Core < 2.28.0 SSRF Guard Bypass via is_private_ip()

Priority MEDIUM 61CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00426 37th percentileScored 2026-11-07
Fix Fixed flyto-core (flytohub): 2.28.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
flytohubflyto-corebefore 2.28.02.28.0Patch availableCNA
  • flyto-core Vendorflytohub Affected before 2.28.0 Fixed in 2.28.0 Patch available CNA

Remediation

  • Fix · CNA flyto-core (flytohub) Fixed in 2.28.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73530
  2. 2026-10-03 Alias added: GHSA-35jm-rm2f-hpgj

References

Advisory 1

Other 1

  • TI-2026-47709 Flyto2 Core: Arbitrary file write via image.download (and other file-writing modules) CVSS 3.1CRITICAL 10.0
  • TI-2026-47706 Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration CVSS 3.1CRITICAL 9.3
  • TI-2026-47707 Flyto2 Core: ${env.VAR} interpolation reads any env secret despite env.get being denylisted CVSS 3.1HIGH 8.6
  • TI-2026-47705 Flyto2 Core: LLM/API keys leak to an attacker-controlled base_url CVSS 3.1HIGH 8.6
  • TI-2026-74172 Unauthenticated command execution in Flyto2 Core over HTTP MCP CVSS 3.1HIGH 8.4
  • TI-2026-47708 Server-side request forgery in flytohub flyto-core CVSS 3.1HIGH 8.5
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences