CVE-2025-71408

Published: Lug 25, 2026 Last Modified: Lug 25, 2026

ExploitDB:

Other exploit source:

Google Dorks:

HIGH 8,5

Source: [email protected]

Attack Vector: local

Attack Complexity: low

Privileges Required: low

User Interaction: none

Confidentiality: N/A

Integrity: N/A

Availability: N/A

HIGH 7,8

Source: [email protected]

Attack Vector: local

Attack Complexity: low

Privileges Required: low

User Interaction: none

Scope: unchanged

Confidentiality: high

Integrity: high

Availability: high

Description

AI Translation Available

NLTK (Natural Language Toolkit) before version 3.9.3 contains an eval injection vulnerability in the nltk.collocations module that allows an attacker who controls command-line arguments to execute arbitrary Python code. When collocations.py is invoked directly, the __main__ block passes command-line arguments directly to eval() as suffixes of BigramAssocMeasures without allowlist validation or sanitization, enabling an attacker to supply a Python expression that escapes the intended attribute lookup and executes arbitrary code including OS commands via the os module.

Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

Incomplete

Abstraction: Variant Structure: Simple

Common Consequences

Security Scopes Affected:

Confidentiality Access Control Integrity Availability Other Non-Repudiation

Potential Impacts:

Read Files Or Directories Read Application Data Bypass Protection Mechanism Gain Privileges Or Assume Identity Execute Unauthorized Code Or Commands Hide Activities