What is CVE-2026-33236?

CVE-2026-33236 is a high-severity vulnerability in Nltk, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-03-20.

How severe is CVE-2026-33236?

High severity. CVSS v3 base score is 8.1 out of 10.

Path Traversal in Nltk

CVE-2026-33236

NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (6.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.

Affected products

Nltk — versions <= 3.9.3

Weakness classification (CWE)

CWE-22 — Path Traversal

References

https://github.com/nltk/nltk/security/advisories/GHSA-469j-vmhf-r6v7 (x_refsource_CONFIRM)
https://github.com/nltk/nltk/commit/89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33236?: CVE-2026-33236 is a high-severity vulnerability in Nltk, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-03-20.
How severe is CVE-2026-33236?: High severity. CVSS v3 base score is 8.1 out of 10.