🛡️ CVE-2026-59890 on Ubuntu — setuptools
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.
Distribution advisory
This page covers CVE-2026-59890 as tracked by Ubuntu, for the package setuptools. No fixed version has been recorded for this distribution yet.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity low, availability none.
Weakness class
UBUNTU-CVE-2026-59890 is classified as CWE-176: Improper Handling of Unicode Encoding. The product does not properly handle when an input contains Unicode encoding.
Affected software
UBUNTU-CVE-2026-59890 is recorded against 1 package.
- setuptools
Timeline and source
Published on 8 July 2026 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
Details
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| setuptools | — | — |
References
Similar Threats
- Unknown CLSA-2025-1752019950
- Unknown CLSA-2025-1752711068
- Unknown CLSA-2025-1760314352
- Unknown CLSA-2025-1760314353
- Unknown CLSA-2025-1760400751
Vulnerability Monitoring
Track new vulnerabilities in setuptools
UBUNTU-CVE-2026-59890 is rated CVSS 5.0 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.
Set Up Free Alerts →No credit card required · Results in minutes
ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.