# python-nltk 3.2.5-1ubuntu0.1+esm4: python-nltk 3.2.5-1ubuntu0.1+esm4 for Ubuntu 18.04.6 LTS (bionic)

python-nltk 3.2.5-1ubuntu0.1+esm4, released March 20, 2026, fixes 6 CVEs in python-nltk. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-bionic-python-nltk-3.2.5-1ubuntu0.1-esm4
- Platform: Linux
- Released: Mar 20, 2026
- Priority: Urgent (Closes CVE-2026-0848, rated Critical)
- CVEs: 6, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [python-nltk](https://patchblox.com/security/data/product/linux/python-nltk.md) | Ubuntu 18.04.6 LTS (bionic) | 3.2.5-1ubuntu0.1+esm4 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-0848](https://patchblox.com/security/data/cve/CVE-2026-0848.md) | Urgent | nltk: NLTK versions <=3.9.2 are vulnerable to arbitrary code execution due to improper input validation in the StanfordSegm... | 10.0 | 0.0084 |  |
| [CVE-2026-33231](https://patchblox.com/security/data/cve/CVE-2026-33231.md) | High | nltk: NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting researc... | 7.5 | 0.0126 |  |
| [CVE-2026-0847](https://patchblox.com/security/data/cve/CVE-2026-0847.md) | High | nltk: A vulnerability in NLTK versions up to and including 3.9.2 allows arbitrary file read via path traversal in multiple... | 7.5 | 0.0100 |  |
| [CVE-2026-33236](https://patchblox.com/security/data/cve/CVE-2026-33236.md) | High | nltk: NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting researc... | 8.1 | 0.0061 |  |
| [CVE-2026-0846](https://patchblox.com/security/data/cve/CVE-2026-0846.md) | High | nltk: A vulnerability in the `filestring()` function of the `nltk.util` module in nltk version 3.9.2 allows arbitrary file... | 7.5 | 0.0059 |  |
| [CVE-2026-33230](https://patchblox.com/security/data/cve/CVE-2026-33230.md) | Routine | nltk: NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting researc... | 6.1 | 0.0034 |  |

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Data as of 2026-11-11T01:43:54Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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