GHSA-GH9R-C94J-CMP5 Stanza: RCE via pickle deserialization in the lemmatizer

TL;DR Loading an attacker-supplied lemma .pt runs arbitrary code as the loading user. Since 1.14.0 the lemmatizer stores posdict as a gzip-compressed pickle in the checkpoint's dicts field a bytes value. torch.loadweightsonly=True treats bytes as a primitive and passes it through unexamined, so i...