{"id":"CVE-2026-68770","aliases":["GHSA-jhr6-gm9c-rqjv","PYSEC-2026-4164"],"url":"https://o3.security/vulnerability/CVE-2026-68770","summary":"sentence-transformers Arbitrary Code Execution on Local Model Load Despite trust_remote_code=False","details":"sentence-transformers contains a security control bypass vulnerability that allows attackers to achieve arbitrary code execution by exploiting a logic flaw in the import_module_class helper within sentence_transformers/util/misc.py, where the guard condition includes an 'or os.path.exists(model_name_or_path)' clause that satisfies the trust gate whenever the supplied path exists on the local filesystem, regardless of the trust_remote_code=False argument. Attackers who can control or influence the contents of a model directory on disk can place malicious Python files such as modeling_*.py referenced via modules.json, causing the code to execute at import time when an application loads the model with SentenceTransformer(path, trust_remote_code=False), bypassing the documented security contract and achieving code execution within the loading process.","published":"2026-07-31T20:56:06.867Z","modified":"2026-10-21T02:59:04.696474569Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"sentence-transformers","fixedVersion":"5.6.0"}],"fix":{"url":"https://github.com/huggingface/sentence-transformers/commit/ae1acc3fb2aa2004577b297eb4a915ce7a03316a","label":"huggingface/sentence-transformers@ae1acc3"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68770.json"},{"type":"ADVISORY","url":"https://github.com/huggingface/sentence-transformers/pull/3807"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68770"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/sentence-transformers-arbitrary-code-execution-on-local-model-load-despite-trust-remote-code-false"},{"type":"REPORT","url":"https://github.com/huggingface/sentence-transformers/issues/3801"},{"type":"FIX","url":"https://github.com/huggingface/sentence-transformers/commit/ae1acc3fb2aa2004577b297eb4a915ce7a03316a"},{"type":"PACKAGE","url":"https://github.com/huggingface/sentence-transformers"},{"type":"WEB","url":"https://github.com/huggingface/sentence-transformers/pull/3935"},{"type":"WEB","url":"https://github.com/huggingface/sentence-transformers/commit/626eb602b088878a8173bcab69225f68411b99e1"},{"type":"WEB","url":"https://github.com/huggingface/sentence-transformers/releases/tag/v5.6.0"},{"type":"WEB","url":"https://github.com/huggingface/sentence-transformers/releases/tag/v6.0.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:59:04.696474569Z"}}