{"id":"RUSTSEC-2026-0434","summary":"`ant-releases`: extracting a release archive can write files outside the destination directory (path traversal / zip-slip)","details":"`ant-releases` downloads and unpacks release archives from the `safe_network` / `autonomi` repositories. When it extracts an archive, it builds each output path by joining the archive entry's **own name** onto the destination directory, with no check\nfor `..` or absolute components — a classic \"zip-slip\" path traversal (CWE-22 / CWE-23). A crafted archive can therefore create or overwrite files outside the intended extraction directory.\n\nIn `extract_release_archive` (`src/lib.rs`), the ZIP branch does:\n\n```rust\nlet out_path = dest_dir_path.join(file.name());   // raw zip entry name, no containment check\nif file.name().ends_with('/') {\n    std::fs::create_dir_all(&out_path)?;          // dir created outside dest_dir\n} else {\n    let mut outfile = std::fs::File::create(&out_path)?;   // file written outside dest_dir\n    std::io::copy(&mut file, &mut outfile)?;\n}\n```\n\n## Proof of concept\n\nA one-entry ZIP whose entry name is `../foo_pwned.txt`, passed to `AntReleaseRepoActions::extract_release_archive` (obtained via the crate's public `\u003cdyn AntReleaseRepoActions\u003e::default_config()`), writes `foo_pwned.txt` as a sibling of\nthe destination directory, outside it. Confirmed against the published `0.4.3` crate.","modified":"2026-11-02T11:30:18.468635637Z","published":"2026-10-31T12:00:00Z","database_specific":{"license":"CC0-1.0"},"references":[{"type":"PACKAGE","url":"https://crates.io/crates/ant-releases"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2026-0434.html"},{"type":"WEB","url":"https://github.com/maidsafe/ant-releases"}],"affected":[{"package":{"name":"ant-releases","ecosystem":"crates.io","purl":"pkg:cargo/ant-releases"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}],"ecosystem_specific":{"affects":{"os":[],"functions":["ant_releases::AntReleaseRepoActions::extract_release_archive"],"arch":[]},"affected_functions":null},"database_specific":{"categories":["code-execution"],"cvss":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","informational":null,"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0434.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"}]}