========================================================================== Ubuntu Security Notice USN-8214-1 April 28, 2026
nltk vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
NLTK could be made to crash or run programs as your login if it opened a
specially crafted zip file.
Software Description:
- nltk: Natural Language Toolkit
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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
python3-nltk 3.8.1-1ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 22.04 LTS
python3-nltk 3.7-1ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 20.04 LTS
python3-nltk 3.4.5-2ubuntu0.1~esm3
Available with Ubuntu Pro
Ubuntu 18.04 LTS
python-nltk 3.2.5-1ubuntu0.1+esm3
Available with Ubuntu Pro
python3-nltk 3.2.5-1ubuntu0.1+esm3
Available with Ubuntu Pro
Ubuntu 16.04 LTS
python-nltk 3.1-1ubuntu0.1+esm3
Available with Ubuntu Pro
python3-nltk 3.1-1ubuntu0.1+esm3
Available with Ubuntu Pro
Ubuntu 14.04 LTS
python-nltk 2.0~b9-0ubuntu4.1~esm5
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8214-1
CVE-2025-14009
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