{"id":"CVE-2025-61677","aliases":["GHSA-6px8-mr29-cj4r","PYSEC-2026-1288"],"title":"DataChain Vulnerable to Deserialization of Untrusted Data from Environment Variables","summary":"DataChain Vulnerable to Deserialization of Untrusted Data from Environment Variables","severity":"low","cvss":2.5,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","vendor":"datachain","product":"datachain","ecosystem":"pip","affected":["datachain < 0.34.2"],"patched":["datachain 0.34.2"],"published":"2025-10-02","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-6px8-mr29-cj4r","references":[{"url":"https://github.com/iterative/datachain/security/advisories/GHSA-6px8-mr29-cj4r"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61677"},{"url":"https://github.com/iterative/datachain/pull/1358"},{"url":"https://github.com/iterative/datachain/commit/914b95610620d50c8d9bee506ccbfa7d4d57fdc0"},{"url":"https://github.com/iterative/datachain"}],"tags":["osv","pip"],"epss":0.00162,"epssPercentile":0.05851,"ingestedAt":"2026-07-08T18:25:46.509Z","slug":"CVE-2025-61677","body":"## Overview\n\nThe DataChain library reads serialized objects from environment variables (such as `DATACHAIN__METASTORE` and `DATACHAIN__WAREHOUSE`) in the `loader.py` module. An attacker with the ability to set these environment variables can trigger code execution when the application loads.\n\n## Affected packages\n\n- `datachain < 0.34.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `datachain 0.34.2`","depth":"sunlit","depthScore":14,"depthScoreParts":{"impact":13.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}