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.
Resolved in https://github.com/conda/rattler/pull/2445, released in rattler 0.43.2.
a0e61a33da8b9d6de712fab2a879fa9da977e6e3 (HEAD at audit time, 2026-05-13 release)prefix-dev/pixi @ e640477Berkant Koc me@berkoc.com PGP: 0C588DFD76204987284213EA0AC529C41F8AA5D6
0.1.00.1.10.1.20.10.00.11.00.12.00.13.00.13.10.14.00.15.0+26 more0.24.0Exploitability
AV:NAC:LAT:NPR:NUI:PVulnerable System
VC:HVI:HVA:HSubsequent System
SC:NSI:NSA:NCVSS: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