{"action":"Upgrade transformers to 5.0.0rc3 or later.","affected":[{"fixed":"5.0.0rc3","introduced":"0"}],"component":"transformers","cve_ids":["CVE-2026-1839"],"ecosystem":"PyPI","epss":0.00382,"exploited":false,"fixed_versions":["5.0.0rc3"],"ghsa_id":"GHSA-69w3-r845-3855","id":"tcs_01M5KF31PHGP0XYHSWVZ8ZT0B1","modified_at":"2026-09-10T03:50:43.300048881Z","published_at":"2026-04-07T06:30:28Z","references":["https://osv.dev/vulnerability/GHSA-69w3-r845-3855","https://nvd.nist.gov/vuln/detail/CVE-2026-1839","https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396","https://github.com/huggingface/transformers","https://github.com/huggingface/transformers/releases/tag/v5.0.0rc3","https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-69w3-r845-3855","url":"https://osv.dev/vulnerability/GHSA-69w3-r845-3855"}],"summary":"HuggingFace Transformers allows for arbitrary code execution in the `Trainer` class"}