PyPI/nltk CVE-2026-63312: high 7.5, EPSS 0.65%
NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses pathsec.ENFORCE by calling builtins.open() directly instead of pathsec.open(). Attackers
Action: Upgrade nltk to 3.10.0 or later.
pip install nltk==3.10.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.10.0 | - |
Fixed versions
| 3.10.0 |
Sources
- osv: PYSEC-2026-3730
- nvd: CVE-2026-63312
- https://www.vulncheck.com/advisories/nltk-streambackedcorpusview-bypasses-pathsec-enforce-arbitrary-file-read
- https://github.com/nltk/nltk/security/advisories/GHSA-x5ph-mj9p-rfr8
CVE-2026-63312 · published · modified · JSON