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Vulnerability Details :

CVE-2026-59890

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-08 Jul, 2026 | 16:02
Updated At-08 Jul, 2026 | 16:44
Rejected At-
Credits

setuptools: MANIFEST.in exclusion bypass in sdist via Unicode normalization collision (NFC/NFD) on macOS APFS/HFS+

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.

Vendors
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Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
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N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:08 Jul, 2026 | 16:02
Updated At:08 Jul, 2026 | 16:44
Rejected At:
▼CVE Numbering Authority (CNA)
setuptools: MANIFEST.in exclusion bypass in sdist via Unicode normalization collision (NFC/NFD) on macOS APFS/HFS+

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.

Affected Products
Vendor
pypa
Product
setuptools
Versions
Affected
  • < 83.0.0
Problem Types
TypeCWE IDDescription
CWECWE-176CWE-176: Improper Handling of Unicode Encoding
CWECWE-697CWE-697: Incorrect Comparison
Type: CWE
CWE ID: CWE-176
Description: CWE-176: Improper Handling of Unicode Encoding
Type: CWE
CWE ID: CWE-697
Description: CWE-697: Incorrect Comparison
Metrics
VersionBase scoreBase severityVector
3.16.1MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c
x_refsource_CONFIRM
https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f
x_refsource_MISC
https://github.com/pypa/setuptools/releases/tag/v83.0.0
x_refsource_MISC
Hyperlink: https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f
Resource:
x_refsource_MISC
Hyperlink: https://github.com/pypa/setuptools/releases/tag/v83.0.0
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c
exploit
Hyperlink: https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:08 Jul, 2026 | 17:17
Updated At:13 Jul, 2026 | 17:04

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.1MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
N/A
Type: Secondary
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Python Software Foundation
python
>>setuptools>>Versions before 83.0.0(exclusive)
cpe:2.3:a:python:setuptools:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-176Primarysecurity-advisories@github.com
CWE-697Primarysecurity-advisories@github.com
CWE ID: CWE-176
Type: Primary
Source: security-advisories@github.com
CWE ID: CWE-697
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8fsecurity-advisories@github.com
Patch
https://github.com/pypa/setuptools/releases/tag/v83.0.0security-advisories@github.com
Release Notes
https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5csecurity-advisories@github.com
Exploit
Vendor Advisory
Mitigation
https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit
Vendor Advisory
Mitigation
Hyperlink: https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/pypa/setuptools/releases/tag/v83.0.0
Source: security-advisories@github.com
Resource:
Release Notes
Hyperlink: https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c
Source: security-advisories@github.com
Resource:
Exploit
Vendor Advisory
Mitigation
Hyperlink: https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Exploit
Vendor Advisory
Mitigation

Change History

0
Information is not available yet

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Assigner-Python Software Foundation
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EPSS-1.03% / 60.05%
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Incorrect IPv4 and IPv6 private ranges

The “ipaddress” module contained incorrect information about whether certain IPv4 and IPv6 addresses were designated as “globally reachable” or “private”. This affected the is_private and is_global properties of the ipaddress.IPv4Address, ipaddress.IPv4Network, ipaddress.IPv6Address, and ipaddress.IPv6Network classes, where values wouldn’t be returned in accordance with the latest information from the IANA Special-Purpose Address Registries. CPython 3.12.4 and 3.13.0a6 contain updated information from these registries and thus have the intended behavior.

Action-Not Available
Vendor-Python Software Foundation
Product-CPythoncpython
CWE ID-CWE-697
Incorrect Comparison
Details not found