Description

NLTK versions <=3.9.2 are vulnerable to arbitrary code execution due to improper input validation in the StanfordSegmenter module. The module dynamically loads external Java .jar files without verification or sandboxing. An attacker can supply or replace the JAR file, enabling the execution of arbitrary Java bytecode at import time. This vulnerability can be exploited through methods such as model poisoning, MITM attacks, or dependency poisoning, leading to remote code execution. The issue arises from the direct execution of the JAR file via subprocess with unvalidated classpath input, allowing malicious classes to execute when loaded by the JVM.

INFO

Published Date :

2026-03-05T20:48:05.364Z

Last Modified :

2026-03-06T16:31:01.105Z

Source :

@huntr_ai
AFFECTED PRODUCTS

The following products are affected by CVE-2026-0848 vulnerability.

Vendors Products
Nltk
  • Nltk
  • Nltk/nltk

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
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User Interaction
Scope
Confidentiality Impact
Integrity Impact
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact