CVE-2026-59974

Stanza is a Stanford NLP Python library for tokenization, sentence segmentation, NER, and parsing of many human languages. Prior to 1.14.0, stanza.resources.common.unzip in stanza/resources/common.py passes downloaded model and resource archives to zipfile.ZipFile.extractall without validating member paths, and the vulnerable extraction path is reachable through stanza.download and stanza.install_corenlp. A malicious archive containing parent-directory traversal entries can write outside the intended model directory, allowing files writable by the Stanza process to be overwritten and potentially enabling code execution through modified shell configuration, SSH authorization data, Python packages, or executable scripts. This issue is fixed in version 1.14.0.

• CWE-22

• https://github.com/stanfordnlp/stanza/commit/a7085e75abdf35f277754dda472bba4e6819bcbb
• https://github.com/stanfordnlp/stanza/releases/tag/v1.14.0
• https://github.com/stanfordnlp/stanza/security/advisories/GHSA-2fwf-f686-7p34
• https://github.com/stanfordnlp/stanza/security/advisories/GHSA-2fwf-f686-7p34

Published

Sep 16, 2026

Last Modified

Sep 16, 2026

Status

Received

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