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CVE-2026-67426— Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration

CVSS 9.3 · Critical EPSS 0.29% · P21

Affected Version Matrix 1

VendorProductVersion RangeStatus
flytohubflyto-core< 2.26.7affected
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I. Basic Information for CVE-2026-67426

Vulnerability Information
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Vulnerability Title
Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration
Source: CVE Program / CVE List V5
Vulnerability Description
Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.7, the standalone flyto-verification service in src/core/verification_service.py exposes unauthenticated POST /run on 0.0.0.0:8344 and uses client-supplied callback_url for an outbound POST with X-Internal-Key: $FLYTO_RUNNER_SECRET while bypassing target_allowed, allowing unauthenticated SSRF and runner secret exfiltration. This issue is fixed in version 2.26.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Flyto2 Core 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flyto2 Core是Flyto2组织的一个服务器与网络设备核心平台。 Flyto2 Core 2.26.7之前版本存在安全漏洞，该漏洞源于flyto-verification服务暴露未经身份验证的POST /run接口并接受客户端提供的callback_url，导致服务端请求伪造（SSRF）和运行器密钥泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
flytohubflyto-core < 2.26.7 -

II. Public POCs for CVE-2026-67426

#POC DescriptionSource LinkShenlong Link
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 13392 chars
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III. Intelligence Information for CVE-2026-67426

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Patches & Fixes for CVE-2026-67426 (2)

Vendor Advisories for CVE-2026-67426 (1)

Same Patch Batch · flytohub · 2026-07-29 · 6 CVEs total

CVE-2026-6742910.0 CRITICALFlyto2 Core: Arbitrary file write via image.download (and other file-writing modules)
CVE-2026-674278.6 HIGHFlyto2 Core: ${env.VAR} interpolation reads any env secret despite env.get being denyliste
CVE-2026-674258.6 HIGHFlyto2 Core: LLM/API keys leak to an attacker-controlled base_url
CVE-2026-674288.5 HIGHFlyto2 Core: Multiple HTTP-family modules fetch client-controlled URLs without the SSRF gu
CVE-2026-674248.5 HIGHFlyto2 Core: Guarded HTTP modules follow redirects into internal space without per-hop SSR

IV. Related Vulnerabilities

Same product: flyto-core
Same vendor: flytohub
Same weakness: CWE-306

V. Comments for CVE-2026-67426

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