CVE-2026-5223
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Rust-lang Cargo
PublishedMay 25, 2026
First seenMay 25, 2026
Weakness typeCWE-61CWE-61
How to fix
Update
- rust-lang cargo1.96.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rust-lang cargo | v < 1.96.0 | 1.96.0 |
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