CVE-2026-59974

7.8 HIGHpublic exploit available

Published 2026-09-16 · Updated 2026-09-16

AI risk analysis

Summary: The flaw allows a malicious archive to overwrite files outside the intended directory, potentially enabling code execution.
Exploitability: Exploitation requires a user to download a malicious archive, making it moderately hard to exploit.
Blast radius: If exploited, it could overwrite critical files, leading to code execution and potential system compromise.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to stanza 1.14.0 or later.

rcefile-overwritepython-library

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses

CWE-22

Public exploit & PoC references

References

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.