Mmastodon TechnologyCybersecurity first seen 1 d ago, last 1 d ago, peak #2

CPython vulnerability EUVD-2026-89183 disclosed with moderate severity

Original: 🚨 EUVD-2026-89183 📊 Score: 5.9/10 (CVSS v3.1) 📦 Product: CPython 🏢 Vendor: Python Software Foundation 📅 Updated: 2026-09

A vulnerability tracked as EUVD-2026-89183 has been disclosed in CPython, the reference implementation of the Python language maintained by the Python Software Foundation. The flaw concerns cleanup of tempfile.TemporaryDirectory, where a race condition could let an attacker who can modify the directory tree during cleanup swap in a directory in place of the intended one. It is rated 5.9 out of 10 on the CVSS v3.1 scale, a moderate severity score.

Why now: Security teams monitor new vulnerability advisories affecting widely used software like Python.

CPythonPython Software Foundation

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Evidence

• 🚨 EUVD-2026-89183 📊 Score: 5.9/10 (CVSS v3.1) 📦 Product: CPython 🏢 Vendor: Python Software Foundation 📅 Updated: 2026-09-29 📝 The cleanup of tempfile.TemporaryDirectory is vulnerable to a race condition. An attacker who can modify the tree during cleanup can replace a directory… · EUVD_Bot

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