{"id":"PYSEC-2026-2971","summary":"rattler has an entry-point path traversal in noarch:python install (arbitrary file write)","details":"## Summary\n\n`EntryPoint::FromStr` in `rattler_conda_types` performs only `.trim()` on the `command` field before the linker joins it onto the install prefix and writes an executable Python script. A malicious `noarch:python` package can ship an `info/link.json` with an entry-point name containing `..`, `/`, `\\`, or an absolute path; the resulting file is written outside the prefix (or clobbers an existing in-prefix entry-point such as `bin/pip`) with mode `0o775` on Unix and a copied launcher `.exe` on Windows. This affects the default install path of `pixi install`, `rattler-build`, some methods in `py-rattler`, and any other consumer of the `rattler` install crate; no flag or post-link-script opt-in is involved.\n\nResolved in https://github.com/conda/rattler/pull/2445, released in rattler 0.43.2.\n\n## Affected\n\n- Repository: https://github.com/conda/rattler\n- Commit: `a0e61a33da8b9d6de712fab2a879fa9da977e6e3` (HEAD at audit time, 2026-05-13 release)\n- Downstream consumers reached through the same code path: `prefix-dev/pixi` @ `e640477`\n- pixi 0.69.0 and rattler-build 0.65.0 fix this issue\n\n## Researcher\n\nBerkant Koc \u003cme@berkoc.com\u003e\nPGP: 0C588DFD76204987284213EA0AC529C41F8AA5D6","aliases":["CVE-2026-47425","GHSA-q53q-5r4j-5729"],"modified":"2026-07-13T16:32:07.504664620Z","published":"2026-07-13T15:35:23.329275Z","references":[{"type":"WEB","url":"https://github.com/conda/rattler/security/advisories/GHSA-q53q-5r4j-5729"},{"type":"WEB","url":"https://github.com/conda/rattler/pull/2445"},{"type":"PACKAGE","url":"https://github.com/conda/rattler"},{"type":"PACKAGE","url":"https://pypi.org/project/py-rattler"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-q53q-5r4j-5729"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47425"}],"affected":[{"package":{"name":"py-rattler","ecosystem":"PyPI","purl":"pkg:pypi/py-rattler"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.24.0"}]}],"versions":["0.1.0","0.1.1","0.1.2","0.10.0","0.11.0","0.12.0","0.13.0","0.13.1","0.14.0","0.15.0","0.16.0","0.17.0","0.18.0","0.19.0","0.2.0","0.2.1","0.20.0","0.21.0","0.22.0","0.23.0","0.23.1","0.23.2","0.3.0","0.4.0","0.5.0","0.6.0","0.6.1","0.6.2","0.6.3","0.7.0","0.7.1","0.7.2","0.8.0","0.8.2","0.9.0","0.9.1"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/py-rattler/PYSEC-2026-2971.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U"}]}