{"id":"CVE-2026-93348","summary":"Unsloth Zoo Code Injection via model_type in config.json","details":"Unsloth Zoo versions 2025.9.9 before 2026.8.14, as implemented in Unsloth 2025.9.9 through 2026.8.19, contains a code injection vulnerability in the model-loading compile path where the get_transformers_model_type() function in hf_utils.py collects model_type values from nested model configurations without enforcing a character allowlist, allowing newlines and arbitrary Python source to survive normalization. Attackers can embed a newline in a nested model_type value within a malicious model's config.json to terminate the generated import statement and execute arbitrary Python code via exec() in unsloth_compile_transformers(), achieving remote code execution as the loading user when the model is loaded for training or inference.","modified":"2026-10-02T03:30:59.522347416Z","published":"2026-09-28T15:09:41.524Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"2025.9.9"},{"fixed":"2026.8.14"},{"introduced":"2025.9.9"},{"fixed":"2026.8.20"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"introduced":"2025.9.9"},{"fixed":"2026.8.14"},{"introduced":"2025.9.9"},{"fixed":"2026.8.19"}],"source":"DESCRIPTION"}],"cna_assigner":"VulnCheck","cwe_ids":["CWE-94"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93348.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93348.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93348"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/unsloth-zoo-code-injection-via-model-type-in-config-json"},{"type":"FIX","url":"https://github.com/unslothai/unsloth-zoo/pull/1083"},{"type":"FIX","url":"https://github.com/unslothai/unsloth-zoo/pull/1108"},{"type":"FIX","url":"https://github.com/unslothai/unsloth/commit/92ee0207a38ebc8af1a0e678aa92d7e7d901ea0d"},{"type":"PACKAGE","url":"https://github.com/unslothai/unsloth"},{"type":"PACKAGE","url":"https://github.com/unslothai/unsloth-zoo"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/unslothai/unsloth","events":[{"introduced":"0"},{"fixed":"92ee0207a38ebc8af1a0e678aa92d7e7d901ea0d"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v0.1.801-beta","v0.1.800-beta","v0.1.71-beta","v0.1.702-beta","v0.1.701-beta","v0.1.70-beta","v0.1.62-beta","v0.1.61-beta","v0.1.60-beta","desktop-v0.1.527-beta","v0.1.527-beta","desktop-v0.1.526-beta","v0.1.526-beta","v0.1.525-beta","v0.1.524-beta","v0.1.523-beta","v0.1.522-beta","v0.1.521-beta","v0.1.52-beta","v0.1.512-beta","v0.1.511-beta","v0.1.51-beta","v0.1.501-beta","v0.1.50-beta","v0.1.49-beta","v0.1.481-beta","v0.1.48-beta","v0.1.471-beta","v0.1.47-beta","v0.1.464-beta","v0.1.463-beta","v0.1.462-beta","v0.1.46-beta","v0.1.451-beta","v0.1.45-beta","v0.1.44-beta","v0.1.431-beta","v0.1.43-beta","v0.1.42-beta","v0.1.416-beta","v0.1.415-beta","v0.1.41-beta","v0.1.405-beta","v0.1.40-beta","v0.1.39-beta","v0.1.38-beta","v0.1.37-beta","v0.1.36-beta","v0.1.35-beta","v0.1.3-beta","v0.1.25-beta","v0.1.2-beta","b8475","b8457","v0.1.0-beta","March-2026"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93348.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}