CVE-2026-0846
Fixed in a distro release EPSS <1%CVSS 8.6
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.
Products: nltk/nltk, Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.3, Red Hat Lightspeed Core, Red Hat OpenShift Lightspeed, Red Hat Ansible Automation Platform 2, Red Hat OpenShift AI (RHOAI)
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | nltk | 3.9.3 |
| PyPI | nltk | no fix |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | nltk | no fix |
| Debian 13 | nltk | no fix |
| Debian 14 | nltk | 3.9.3-1 |
| Ubuntu 25.10 | nltk | no fix |
| Ubuntu 26.10 | nltk | no fix |
| Ubuntu Pro 14.04 LTS | nltk | 2.0~b9-0ubuntu4.1~esm6 |
| Ubuntu Pro 16.04 LTS | nltk | 3.1-1ubuntu0.1+esm4 |
| Ubuntu Pro 18.04 LTS | nltk | 3.2.5-1ubuntu0.1+esm4 |
| Ubuntu Pro 20.04 LTS | nltk | 3.4.5-2ubuntu0.1~esm4 |
| Ubuntu Pro 22.04 LTS | nltk | 3.7-1ubuntu0.1~esm2 |
| Ubuntu Pro 24.04 LTS | nltk | 3.8.1-1ubuntu0.1~esm2 |
| Ubuntu Pro 26.04 LTS | nltk | 3.9.2-1ubuntu0.1~esm2 |