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CVE-2026-8328

Published May 13, 2026 CWE-918 EPSS 0.46% (38th pctl)

Overview

CVE-2026-8328 is a known-severity vulnerability. It was published on May 13, 2026.

Technical Description

The ftpcp() function in Lib/ftplib.py was not updated when

CVE-2021-4189 was fixed. While makepasv() was patched to replace

server-supplied PASV host addresses with the actual peer address

(getpeername()[0]), ftpcp() still calls parse227() directly and passes

the raw attacker-controllable IP address and port to target.sendport(). This patch is related to CVE-2021-4189.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/python/cpython/commit/2bbcf3fb7a420a05605576c0f9468d4675381b5f GitHub github.com/python/cpython/commit/5dadc64673ce875ebfb24163907777dae0f6ca06 GitHub github.com/python/cpython/commit/7d95a1dc7382b55cba7fdd6a110336077584a4f0 GitHub github.com/python/cpython/commit/bb3446dda6c49b32e67c11dbbbf221b40be00763 GitHub github.com/python/cpython/commit/c88704431ea3248ca769384c13856330976fac1d GitHub github.com/python/cpython/commit/eac4fe3b2c77693790a5ef7dfab127c1fee81bf9 GitHub github.com/python/cpython/commit/ef12d0dc824baccf737bba1458e5eed3d1e0fceb GitHub github.com/python/cpython/issues/87451 GitHub github.com/python/cpython/pull/149648 Ref mail.python.org/archives/list/[email protected]/thread/ITF2BAPBQEPYK3LDMPRSY435JGNHYNDP/

Frequently Asked Questions

What is CVE-2026-8328?

CVE-2026-8328 is a known-severity vulnerability. It was published on May 13, 2026.

How severe is CVE-2026-8328?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-8328?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-8328?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-8328 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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