CVE Watch3 de nov. de 2026

CVE-2026-115878

Stanza is a Stanford NLP Python library for tokenization, sentence segmentation, NER, and parsing of many human languages. From 1.14.0 until

CVSS

7.8

Alta

EPSS

0.6%

p49

KEV

—

Exploit Today

0-100

Publicado: 3 de nov. de 2026 · Última mod.: 3 de nov. de 2026 · CWE-94 · CWE-502

EPSS · 30d

0.6%EPSS · 30 dias0.6%

2026-11-042026-11-05

Descrição técnica

Stanza is a Stanford NLP Python library for tokenization, sentence segmentation, NER, and parsing of many human languages. From 1.14.0 until 1.15.0, loading an attacker-supplied lemmatizer checkpoint can execute arbitrary code because stanza/models/lemma/trainer.py stores pos_dict as gzip-compressed pickle bytes and Trainer.load passes the decompressed stream to unrestricted pickle.loads. The outer torch.load call uses weights_only=True, but the nested bytes are treated as a primitive and are not inspected by that allowlist. The path is reachable during pipeline construction through a caller-influenced lemma_model_path, before inference begins. This issue is fixed in version 1.15.0.

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