Natural Language Toolkit
[email protected] has vulnerabilities — update to latest
| Severity | ID | Summary | Fixed in |
|---|---|---|---|
| high | CVE-2026-33236 | NLTK has a Downloader Path Traversal Vulnerability (AFO) - Arbitrary File Overwrite | — |
| high | CVE-2026-0847 | NLTK has a Path Traversal issue | — |
| high | CVE-2026-54293 | Natural Language Toolkit (NLTK): URL-Encoded Path Traversal in nltk.data.load() Allows Arbitrary Local File Read | — |
| medium | GHSA-rf74-v2fm-23pw | Natural Language Toolkit (NLTK) has unbounded recursion in JSONTaggedDecoder.decode_obj() may cause DoS | — |
| high | CVE-2026-12243 | NLTK version 3.9.4 is vulnerable to a path traversal attack due to an incomplete fix for GitHub Issue #3504. The `_UNSAFE_NO_PROTOCOL_RE` regex in `nltk/data.py` checks for literal `../` sequences but fails to account for percent-encoded traversal sequences such as `..%2f`. The `url2pathname()` function decodes these sequences after the validation step, allowing an attacker to bypass the protection. This vulnerability enables an attacker to read arbitrary files accessible to the Python process b | — |
| high | CVE-2026-0846 | A vulnerability in the `filestring()` function of the `nltk.util` module in nltk version 3.9.2 allows arbitrary file read due to improper validation of input paths. The function directly opens files specified by user input without sanitization, enabling attackers to access sensitive system files by providing absolute paths or traversal paths. This vulnerability can be exploited locally or remotely, particularly in scenarios where the function is used in web APIs or other interfaces that accept u | — |
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curl https://depscope.dev/api/check/pypi/nltkLast updated · 2026-07-08T02:39:09.753589Z