{"cve":"CVE-2026-54499","nvd":{"published":"2026-07-08T23:16:54.690","modified":"2026-10-25T17:10:00.197","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-502","CWE-676"],"references":["https://github.com/stanfordnlp/stanza/commit/b745008c68c9e50ccb5acd537cb6f2453f8b7ad4","https://github.com/stanfordnlp/stanza/pull/1587","https://github.com/stanfordnlp/stanza/releases/tag/v1.12.2","https://github.com/stanfordnlp/stanza/security/advisories/GHSA-v5jw-96jm-7h2c","https://github.com/stanfordnlp/stanza/security/advisories/GHSA-v5jw-96jm-7h2c"],"products":["stanford:stanza"],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-54499","score":0.00519,"percentile":0.4381,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-v5jw-96jm-7h2c","url":"https://osv.dev/vulnerability/GHSA-v5jw-96jm-7h2c","summary":"Stanza: Remote Code Execution via Unsafe Pickle Deserialization in Model Loaders","modified":"2026-07-13T16:43:04.978357763Z","packages":[{"ecosystem":"PyPI","name":"stanza","purl":"pkg:pypi/stanza","ranges":["<1.12.2"],"fixed":["1.12.2"]}]},{"id":"PYSEC-2026-3075","url":"https://osv.dev/vulnerability/PYSEC-2026-3075","summary":"Stanza: Remote Code Execution via Unsafe Pickle Deserialization in Model Loaders","modified":"2026-07-13T16:33:12.443630967Z","packages":[{"ecosystem":"PyPI","name":"stanza","purl":"pkg:pypi/stanza","ranges":["<1.12.2"],"fixed":["1.12.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}