CVE-2026-33236 - Vulnerability Analysis

Overview

NLTK <= 3.9.3 contains a path traversal vulnerability caused by improper validation of 'subdir' and 'id' attributes in remote XML index files, letting attackers create or overwrite arbitrary files remotely, exploit requires attacker-controlled XML index server.

Severity & Score

Impact

Attackers can create, overwrite, or modify arbitrary files on the system, potentially leading to code execution or system compromise.

Mitigation

Update to a version including commit 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a or later.

References

• https://github.com/nltk/nltk/commit/89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a
• https://github.com/nltk/nltk/security/advisories/GHSA-469j-vmhf-r6v7

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Mar 21, 2026

🟠 CVE-2026-33236 - High (8.1) NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `subdir` ... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-33236/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner