Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Date Jul 8, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product PyPI · serena-agent

CVE CVE-2026-49471

High-risk advisory CVE-2026-49471

Summary

Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Why it matters

GitHub has published a reviewed security advisory for serena-agent. Prioritize it with other application dependency updates, especially because EPSS places it in the 15% percentile.

Operator check

Check whether serena-agent is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.2%; percentile: 15%.

Sources

GitHub Advisory GHSA-37h2-6p4f-mp3q NVD — CVE-2026-49471 Source reference

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

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