HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2025-71408 — NLTK (Natural Language Toolkit) before version 3.9.3 contains an eval injection ...

·Source: NIST NVD

Updated:

Executive Summary

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 san

Analysis

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. CVSS Score: 7.8. Published: 2026-07-24T22:16:50.063.

Indicators of Compromise (1)

CVE (1)
CVE-2025-71408
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Jul 24, 2026. Verified by: NIST.

Related Threats

CRITICALVulnerabilityNEW

N-Able Flaw Exposes MSPs to Worst Case Scenario

<img src="https://ismg-cdn.nyc3.cdn.digitaloceanspaces.com/articles/n-able-flaw-exposes-msps-to-worst-case-scenario-image_small-10-a-32397.jpg" align=right hspace=4><b>Remote Management and Monitoring Tools Widely Used by Managed Security Providers</b><br>Remote management and monitoring software developer N-Able published a second hotfix to patch a vulnerability in all versions of its N-central s

Bank Info Security
MEDIUMVulnerabilityNEW

Hackers steal 31,000 records identifying people behind Liechtenstein companies, foundations

A cyberattack compromised tens of thousands of records related to companies, foundations and trusts in Liechtenstein, prompting the government to to form a “crisis unit” to address the breach.

The Record
HIGHVulnerability

NVD HIGH: CVE-2026-67611 — OpenEMR through 8.2.0 contains an authentication bypass vulnerability that allow...

OpenEMR through 8.2.0 contains an authentication bypass vulnerability that allows attackers with valid credentials to circumvent multi-factor authentication by exploiting the exposed OAuth2 password grant flow through an unauthenticated client registration endpoint. Attackers can register an OAuth2 client via the unauthenticated registration endpoint and use the password grant to exchange credenti

CVE-2026-67611
NIST NVD