{"id":"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.","modified":"2026-08-02T03:47:52.037538410Z","published":"2026-07-31T20:56:06.867Z","database_specific":{"cwe_ids":["CWE-94"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68770.json","cna_assigner":"VulnCheck"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/huggingface/sentence-transformers","events":[{"introduced":"0"},{"fixed":"ae1acc3fb2aa2004577b297eb4a915ce7a03316a"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"5.5.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v2.2.2","v2.2.1","v2.2.0","v2.1.0","v2.0.0","v1.1.0","v1.0.4","v1.0.3","v1.0.2","v1.0.0","v0.4.1","v0.4.0","v0.3.9","v0.3.8","v0.3.7","v0.3.6","v0.3.5","v0.3.4","v0.3.3","v0.3.2","v0.3.1","v0.3.0","v0.2.6","v0.2.5","v0.2.4","v0.2.3","v0.2.2","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68770.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}