CVE-2026-5223
Crates in third party registries can override the cached source of other crates
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.
INFO
Published Date :
May 25, 2026, 8:57 a.m.
Last Modified :
May 25, 2026, 8:57 a.m.
Remotely Exploit :
Yes !
Source :
rust
Affected Products
The following products are affected by CVE-2026-5223
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | 986d4109-89ea-491f-99fd-a8e4803919bd |
Solution
- Update Cargo to the latest secure version.
- Avoid using third-party registries that allow symlinks.
- Verify crate integrity before use.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-5223 vulnerability anywhere in the article.