Skip to main content
VulnerabilityPublished Updated

CVE-2026-59890: setuptools is a package that allows users to download, build, install, upgrade, and uninstall Python packages

Affects setuptoolsSource GCVE Database

0
Compare
Authoritative record:CVE-2026-59890· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium · fixed in 7.5.3_1 : update setuptools when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 7.5.3_1, 2.18.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade pip-tools to 7.5.3_1; shub to 2.18.1.

Affected software

ProductAffectedFixed in
Ubuntu 20.04 LTSsetuptoolspkg:deb/ubuntu/setuptools?arch=source&distro=focalOther threatsAffected
  • 45.2.0-1 – 45.2.0-1ubuntu0.3
4 affected builds
Fixed in–
Ubuntu 22.04 LTSsetuptoolspkg:deb/ubuntu/setuptools?arch=source&distro=jammyOther threatsAffected
  • 52.0.0-4 – 59.6.0-1.2ubuntu0.22.04.3
6 affected builds
Fixed in–
Ubuntu 24.04 LTSsetuptoolspkg:deb/ubuntu/setuptools?arch=source&distro=nobleOther threatsAffected
  • 68.1.2-2 – 68.1.2-2ubuntu1.2
4 affected builds
Fixed in–
Ubuntu 25.10setuptoolspkg:deb/ubuntu/setuptools?arch=source&distro=questingOther threatsAffected
  • =75.8.0-1
  • =78.1.0-1.2
  • =78.1.1-0.1
Fixed in–
Ubuntu 26.04 LTSsetuptoolspkg:deb/ubuntu/setuptools?arch=source&distro=resoluteOther threatsAffected
  • =78.1.1-0.1
  • =78.1.1-0.1build1
Fixed in–
Homebrewpip-toolspkg:brew/pip-toolsOther threatsAffected
  • >=7.3.0_1 <7.5.3_1
Fixed in
  • 7.5.3_1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available that normalizes file names and MANIFEST.in patterns before matching to ensure exclusion rules work correctly on macOS APFS/HFS+ filesystems. Users should upgrade to a fixed version of setuptools to remediate this issue.

Description

CVE-2026-59890 is a medium severity vulnerability in setuptools affecting certain versions. It involves a Unicode normalization issue in the source distribution building process on macOS APFS/HFS+ filesystems. Due to differences in Unicode normalization forms between file names on disk and MANIFEST.in patterns, exclusion rules may fail, causing unintended inclusion of private or sensitive files in published packages. A fix is available that normalizes file names and patterns before matching to prevent this issue.

References

Community reviews

Loading reviews…