# CVE-2026-54499

## Summary

- **CVE ID:** CVE-2026-54499
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
- **CWE:** CWE-502, CWE-676
- **Published:** Jul 8, 2026
- **Last Modified:** Jul 9, 2026

## Description

Stanza is a Stanford NLP Python library for tokenization, sentence segmentation, NER, and parsing of many human languages. Prior to 1.12.2, Stanza model loaders such as stanza.models.common.pretrain.Pretrain.load() attempt torch.load(..., weights_only=True) but fall back to torch.load(..., weights_only=False) on attacker-controllable pickle.UnpicklingError, allowing a malicious .pt pretrain or model file to execute arbitrary pickle code when a Stanza NLP pipeline loads it. This issue is fixed in version 1.12.2.

## Affected Products

- stanfordnlp — stanza (< 1.12.2)

## References

- [CNA](https://github.com/stanfordnlp/stanza/security/advisories/GHSA-v5jw-96jm-7h2c)
- [CNA](https://github.com/stanfordnlp/stanza/pull/1587)
- [CNA](https://github.com/stanfordnlp/stanza/commit/b745008c68c9e50ccb5acd537cb6f2453f8b7ad4)
- [CNA](https://github.com/stanfordnlp/stanza/releases/tag/v1.12.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.52%
- **EPSS Percentile:** 42.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._