Improper Verification of Cryptographic Signature Affecting nltk package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-NLTK-17821336
- published6 Jul 2026
- disclosed4 Jul 2026
- creditlihfdgjr
Introduced: 4 Jul 2026
CVE-2026-12252 (opens in a new tab)How to fix?
There is no fixed version for nltk.
Overview
nltk is a Natural Language Toolkit (NLTK) is a Python package for natural language processing.
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the Stanford Interface Classes. An attacker can execute arbitrary code by supplying a malicious JAR file to the affected Stanford interface classes, which are invoked without integrity verification.