HIGHPyPI →
Black: Arbitrary file writes from unsanitized user input in cache file name
Black: Arbitrary file writes from unsanitized user input in cache file name
Affected packages
- black— 24.3.0 → 26.3.1
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- 0.62%
- EPSS percentile
- 46.3%
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 46%.
Sources
- https://github.com/psf/black/security/advisories/GHSA-3936-cmfr-pm3m
- https://nvd.nist.gov/vuln/detail/CVE-2026-32274
- https://github.com/psf/black/pull/4176
- https://github.com/psf/black/pull/5038
- https://github.com/psf/black/commit/4937fe6cf241139ddbfc16b0bdbb5b422798909d
- https://github.com/psf/black/commit/ed770ba4dd50c419148a0fca2b43937a7447e1f9
- https://access.redhat.com/errata/RHSA-2026:10184
- https://access.redhat.com/errata/RHSA-2026:13545
- https://access.redhat.com/errata/RHSA-2026:13553
- https://access.redhat.com/security/cve/CVE-2026-32274
- https://bugzilla.redhat.com/show_bug.cgi?id=2447111
- https://github.com/psf/black
- https://github.com/psf/black/releases/tag/26.3.1
- https://github.com/pypa/advisory-database/tree/main/vulns/black/PYSEC-2026-2121.yaml
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32274.json
Structured record: https://osv.dev/vulnerability/GHSA-3936-cmfr-pm3m
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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