Source: nltk Version: 3.9.3-1 Severity: important Tags: security upstream X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for nltk. CVE-2026-33236[0]: | 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` and `id` | attributes when processing remote XML index files. Attackers can | control a remote XML index server to provide malicious values | containing path traversal sequences (such as `../`), which can lead | to arbitrary directory creation, arbitrary file creation, and | arbitrary file overwrite. Commit | 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a patches the issue. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-33236 https://www.cve.org/CVERecord?id=CVE-2026-33236 [1] https://github.com/nltk/nltk/security/advisories/GHSA-469j-vmhf-r6v7 [2] https://github.com/nltk/nltk/commit/75917efc66ab122bf4b7ea9ffc33e8f8b39c5dce Please adjust the affected versions in the BTS as needed. Regards, Salvatore
