[UPDATE] [medium] Python: Vulnerability allows code execution

mediumCVE-2026-4519

An attacker can exploit a vulnerability in Python to execute arbitrary code.

CSIRTS triage

vendor: Python product: Python Remote code execution

What: An attacker can exploit a vulnerability in Python to execute arbitrary code.
Who is affected: Deployments of Python are affected by this vulnerability.
Urgency: Remediation is urgent as it allows for remote code execution.
Action: Patch Python to the latest version to address this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Python

Get an email when a new Python advisory drops — max one per day, one-click unsubscribe.

Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-07-22
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0824

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-45190.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-4519	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[UPDATE] [high] IBM QRadar SIEM: Multiple vulnerabilitiescert-bund
unknownUSN-8509-1: Python vulnerabilitiesubuntu

Recent advisories for Python

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-54757: Compliance-trestle (Trestle) is a Python SDK and command-line tool for managing OSCAL complian…nvd · 2026-08-25
unknownCVE-2026-77357: Mesop is a Python-based UI framework that allows users to build web applications. Prior to 1.3…nvd · 2026-08-25
highCVE-2026-55099: icalendar is an RFC 5545 compatible parser and generator of iCalendar files for Python. From 7…nvd · 2026-08-25
highCVE-2026-45019: Chainlit is a Python framework for building production-ready conversational AI applications. F…nvd · 2026-08-25
criticalCVE-2026-45018: Chainlit is a Python framework for building production-ready conversational AI applications. F…nvd · 2026-08-25
highCVE-2026-78379: Improper neutralization of input used for LLM prompting in the python_repl tool in Amazon Stra…nvd · 2026-08-25