HOMEVULNERABILITIESCVE-2026-59890
MEDIUM

CVE-2026-59890

CWE-176Published: July 8, 2026· Updated: Jul 13, 2026

6.1
CVSS v3.1
EPSS:0.27%probability of exploitation in 30 daysPercentile:18.6th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-59890 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Affected Vendors & Products

Python1 product(s)
setuptools
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f
ADVISORYhttps://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c
ADVISORYhttps://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c

All References (4)

→
https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8fPatch
→
https://github.com/pypa/setuptools/releases/tag/v83.0.0Release Notes
→
https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5cExploit · Vendor Advisory · Mitigation
→
https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5cExploit · Vendor Advisory · Mitigation

Quick Facts

CVE IDCVE-2026-59890
CVSS Score6.1 / 10
SeverityMEDIUM
WeaknessCWE-176
CISA KEVNo
EPSS (30d)0.27%
Affected1 vendor(s)
PublishedJul 8, 2026

Related CVEs (CWE-176)

CVE-2025-71316
9.8
CVE-2024-24691
9.8
CVE-2023-39213
9.8
CVE-2026-4116
7.2
CVE-2026-20202
6.6
CVE-2026-48618
6.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-59890 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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