CVE-2026-5223 — Crates in third party registries can override the cached source of other crates
Cargo incorrectly handled symlinks inside of crate tarballs downloaded from third-party registries, allowing a malicious crate to override the source code of another crate from …
Published: 2026-05-25 · CVSS: 6.5 · CVSS 4.0
Cargo incorrectly handled symlinks inside of crate tarballs downloaded from third-party registries, allowing a malicious crate to override the source code of another crate from the same registry. The severity of the vulnerability is **medium** for users of third-party registries. Users of crates.io are **not affected**, as crates.io forbids uploading crates containing any symlink.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7