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

Date Jul 30, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product PyPI · flyto-core

CVE CVE-2026-67426

High-risk advisory CVE-2026-67426

Summary

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

Why it matters

GitHub has published a reviewed security advisory for flyto-core. Prioritize it with other application dependency updates, especially because EPSS places it in the 21% percentile.

Operator check

Check whether flyto-core is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.3%; percentile: 21%.

Sources

GitHub Advisory GHSA-jx74-cqjv-2c67 NVD — CVE-2026-67426 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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