CVE intelligence

CVE-2026-59890

Vulnerability intelligence

Published Jul 8, 2026Sources checked Oct 28, 2026

6.1MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-59890 and is rated Medium severity with a CVSS score of 6.1. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Aug 13, 2026

CBL-Mariner Releases

Vendor-listed releases

69.0.3-6

CISA KEVNot listedBased on the latest collected catalog

EPSS0.4%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-59890?

setuptools is a package that allows users to download, build, install, upgrade, and uninstall Python packages.

Prior to 83.0.0, FileList applied MANIFEST.in exclude, global-exclude, recursive-exclude, and prune directives by matching compiled glob patterns against on-disk file names without Unicode normalization, so on macOS APFS or HFS+ an NFD file name could bypass an NFC exclusion rule and be packed into a source distribution. This issue is fixed in version 83.0.0.

Source: NVD