Vulnerability · Published Jul 21, 2026 · Assigned by GitHub_M
CVE-2026-47425Rattler vulnerable to entry-point path traversal in noarch:python install (arbitrary file write)
Medium 6.9
In plain English
A medium-severity path traversal in py-rattler from conda. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Rattler is a library that provides common functionality used within the conda ecosystem. Prior to version 0.43.2, `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`, `mamba install` via py-rattler, `rattler-build`, and any other consumer of the `rattler` install crate; no flag or post-link-script opt-in is involved. Version 0.43.2 contains a fix for the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | py-rattler | 0.24.0 | GHSA-q53q-5r4j-5729 |
| PyPI | py-rattler | 0.24.0 | PYSEC-2026-2971 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| conda | rattler | < 0.43.2 |
| conda | py-rattler | < 0.24.0 |
| conda | rattler-build | < 0.65.0 |
| prefix-dev | pixi | < 0.69.0 |
Weakness: CWE-22, CWE-73 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N