Ubuntu USN · USN-8214-1

NLTK vulnerability

Published: Tue, 28 Apr 2026 08:10

CVE-2025-14009

Summary

NLTK could be made to crash or run programs as your login if it opened a specially crafted zip file.

Details

It was discovered that NLTK incorrectly handled file extraction when opening a maliciously crafted zip file. An attacker could possibly use this issue to create or overwrite files on the system and execute arbitrary code.

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu bionic

nltk→3.2.5-1ubuntu0.1+esm3apt_upgrade
Standard apt upgrade. Install 3.2.5-1ubuntu0.1+esm3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y nltk
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
python-nltk→3.2.5-1ubuntu0.1+esm3apt_upgrade
Standard apt upgrade. Install 3.2.5-1ubuntu0.1+esm3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y python-nltk
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
python3-nltk→3.2.5-1ubuntu0.1+esm3apt_upgrade
Standard apt upgrade. Install 3.2.5-1ubuntu0.1+esm3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-nltk
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu focal

nltk→3.4.5-2ubuntu0.1~esm3apt_upgrade_esm
Fixed at 3.4.5-2ubuntu0.1~esm3 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y nltk=3.4.5-2ubuntu0.1~esm3
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-nltk→3.4.5-2ubuntu0.1~esm3apt_upgrade_esm
Fixed at 3.4.5-2ubuntu0.1~esm3 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-nltk=3.4.5-2ubuntu0.1~esm3
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu jammy

nltk→3.7-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.7-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y nltk=3.7-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-nltk→3.7-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.7-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-nltk=3.7-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu noble

nltk→3.8.1-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.8.1-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y nltk=3.8.1-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-nltk→3.8.1-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.8.1-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-nltk=3.8.1-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu resolute

nltk→3.9.2-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.9.2-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y nltk=3.9.2-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-nltk→3.9.2-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.9.2-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-nltk=3.9.2-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu trusty

nltk→2.0~b9-0ubuntu4.1~esm5apt_upgrade_esm
Fixed at 2.0~b9-0ubuntu4.1~esm5 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y nltk=2.0~b9-0ubuntu4.1~esm5
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python-nltk→2.0~b9-0ubuntu4.1~esm5apt_upgrade_esm
Fixed at 2.0~b9-0ubuntu4.1~esm5 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python-nltk=2.0~b9-0ubuntu4.1~esm5
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu xenial

nltk→3.1-1ubuntu0.1+esm3apt_upgrade
Standard apt upgrade. Install 3.1-1ubuntu0.1+esm3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y nltk
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
python-nltk→3.1-1ubuntu0.1+esm3apt_upgrade
Standard apt upgrade. Install 3.1-1ubuntu0.1+esm3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y python-nltk
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
python3-nltk→3.1-1ubuntu0.1+esm3apt_upgrade
Standard apt upgrade. Install 3.1-1ubuntu0.1+esm3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-nltk
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Are YOU affected by USN-8214-1?

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