What is CVE-2026-0846?

CVE-2026-0846 is a high-severity vulnerability in Nltk, classified under Absolute Path Traversal. CVSS score: 7.5/10. Published 2026-03-09.

How severe is CVE-2026-0846?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Nltk

CVE-2026-0846

A vulnerability in the `filestring()` function of the `nltk.util` module in nltk version 3.9.2 allows arbitrary file read due to improper validation of input paths. The function directly opens files specified by user input without sanitization, enabling attackers to access sensitive system files by providing absolute paths or traversal paths. This vulnerability can be exploited locally or remotely, particularly in scenarios where the function is used in web APIs or other interfaces that accept user-supplied input.

EPSS: 0.004 (35.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Nltk — versions 3.9.2
Nltk Nltk/nltk — versions unspecified

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-0846?: CVE-2026-0846 is a high-severity vulnerability in Nltk, classified under Absolute Path Traversal. CVSS score: 7.5/10. Published 2026-03-09.
How severe is CVE-2026-0846?: High severity. CVSS v3 base score is 7.5 out of 10.