CVE-2026-12252 - Untrusted JAR Code Execution in Multiple Stanford Interface Classes in nltk/nltk

CVE-2026-12252 - Untrusted JAR Code Execution in Multiple Stanford Interface Classes in nltk/nltk

https://cvefeed.io/rssfeed/latest.atom / Sat, 07/04/2026 - 07:03
CVE ID :CVE-2026-12252
Published : July 4, 2026, 12:58 a.m. | 3 hours, 45 minutes ago
Description :In nltk/nltk versions 3.9.3 and earlier, five Stanford interface classes (StanfordPOSTagger, StanfordNERTagger, StanfordParser, StanfordDependencyParser, and StanfordNeuralDependencyParser) are vulnerable to untrusted JAR code execution. These classes accept user-controllable JAR paths and execute them via the `java()` function, which invokes `subprocess.Popen()` without integrity verification. This vulnerability is identical to CVE-2026-0848, which was fixed for StanfordSegmenter by adding SHA256 verification. However, the fix was not applied to these additional classes, leaving them susceptible to arbitrary code execution when loading untrusted JAR files.
Severity: 7.8 | HIGH
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