PYSEC-2026-2121
At a glance
- Published
- Updated
- CVE
- CVE-2026-32274
- Aliases
- GHSA-3936-cmfr-pm3m
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Description
Black is the uncompromising Python code formatter. Prior to 26.3.1, Black writes a cache file, the name of which is computed from various formatting options. The value of the --python-cell-magics option was placed in the filename without sanitization, which allowed an attacker who controls the value of this argument to write cache files to arbitrary file system locations. Fixed in Black 26.3.1.
Affected packages
| Package | Versions |
|---|---|
| PyPI · black | introduced 0, fixed 26.3.1 |
References
- https://access.redhat.com/security/cve/CVE-2026-32274 WEB
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32274.json WEB
- https://access.redhat.com/errata/RHSA-2026:10184 ADVISORY
- https://access.redhat.com/errata/RHSA-2026:13545 ADVISORY
- https://access.redhat.com/errata/RHSA-2026:13553 ADVISORY
- https://github.com/psf/black/releases/tag/26.3.1 ADVISORY
- https://github.com/psf/black/security/advisories/GHSA-3936-cmfr-pm3m ADVISORY
- https://bugzilla.redhat.com/show_bug.cgi?id=2447111 REPORT
- https://github.com/psf/black/commit/4937fe6cf241139ddbfc16b0bdbb5b422798909d FIX
- https://github.com/psf/black/pull/5038 FIX
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |