{"data":{"id":"ec919c62-1cd0-4b9b-ab0f-df1cbccb9b5e","title":"GHSA-m6w7-qv66-g3mf: BentoML Vulnerable to Arbitrary File Write via Symlink Path Traversal in Tar Extraction","summary":"BentoML's `safe_extract_tarfile()` in `src/bentoml/_internal/utils/filesystem.py` checks only a tar member's own path, not the target of a symlink member. A crafted bento or model tar can therefore place a symlink pointing outside the extraction directory and then write a regular file through it, giving arbitrary file write on the host. The source rates it CVSS 3.1 8.1 (High) and says all versions containing `safe_extract_tarfile()` are affected.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://github.com/advisories/GHSA-m6w7-qv66-g3mf","publishedAt":"2026-03-03T17:46:47.000Z","cveId":"CVE-2026-27905","cweIds":null,"cvssScore":null,"cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":["bentoml@< 1.4.36 (fixed: 1.4.36)"],"affectedPackageNames":["bentoml"],"affectedPackageRefs":["pypi:bentoml"],"affectedVendors":[],"affectedVendorsRaw":["BentoML"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0.00293,"epssCheckedAt":"2026-11-04T00:12:27.047Z","kevDateAdded":null,"advisoryAliases":["GHSA-m6w7-qv66-g3mf"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":null,"fixReleasedAt":"2026-03-06T05:05:37.388Z","daysToFix":3,"fixCheckedAt":"2026-10-29T21:40:19.880Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["confidentiality","integrity","availability"],"aiComponentTargeted":"framework","llmSpecific":false,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":null,"fixes":[{"ecosystem":"pypi","name":"bentoml","fixedVersion":"1.4.36","matchedVersion":"1.4.36","fixReleasedAt":"2026-03-06T05:05:37.388Z","daysToFix":3,"match":"ecosystem","source":"tracked","status":"found","checkedAt":"2026-10-29T21:40:19.734Z"}]}}