{"action":"Upgrade transformers to 5.10.0 or later.","affected":[{"fixed":"5.10.0","introduced":"0"}],"component":"transformers","cve_ids":["CVE-2026-9856"],"ecosystem":"PyPI","epss":0.0046,"exploited":false,"fixed_versions":["5.10.0"],"ghsa_id":"GHSA-xrqw-3rrv-vx5w","id":"tcs_01M5KH8NHGHV6AP0P76TKQVJPJ","modified_at":"2026-09-10T12:15:13.263552340Z","published_at":"2026-09-10T09:44:51.053247Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3929","https://nvd.nist.gov/vuln/detail/CVE-2026-9856","https://github.com/huggingface/transformers/pull/46191","https://github.com/huggingface/transformers/commit/eaaaf8494dd5386634ae37d1d122212fdc315be5","https://github.com/huggingface/transformers","https://huntr.com/bounties/362824d5-fe18-40e8-a6cf-62277f97a170","https://pypi.org/project/transformers","https://github.com/advisories/GHSA-xrqw-3rrv-vx5w"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"PYSEC-2026-3929","url":"https://osv.dev/vulnerability/PYSEC-2026-3929"}],"summary":"Transformers save_pretrained path traversal allows arbitrary file writes through chat template names"}