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CVE-2026-5223

Crates in third party registries can override the cached source of other crates

Published: May 25, 2026Updated: Jun 1, 2026 Sources: CVE List NVD BDUCWE-61
5.3MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 79.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-61

Affected Products

cargoСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
RustThe Rust Foundation
Library
OSS Libraries / generic-library
CargoRust Project
Library
OSS Libraries / crates-io
cargorust-lang
Library
OSS Libraries / generic-library
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
the rust foundationoss-projectOSS Librariesaka rust
rust projectoss-projectOSS Libraries
rust-langoss-projectOSS Librariesaka rust, cargo, async-h1

Exploitability

Official Patch Available
Workaround Available

References

https://blog.rust-lang.org/2026/05/25/cve-2026-5223/
blog.rust-lang.org
https://groups.google.com/g/rustlang-security-announcements/c/IB74S7Yksg8
groups.google.com
https://github.com/rust-lang/cargo/pull/17031
github.com
and 2 more references View all →

Timeline

Published
May 25, 2026
Last Updated
Jun 1, 2026

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